God is neither a man nor the son of man.
The Bible itself (despite interpolation) testifies that Jesus (Peace be upon him) said that the Father is the only God, and that Jesus is a human being, the Old Testament says:

Numbers 23:19 God is not a man, that he should lie, Neither the son of man, that he should repent:

While Jesus (Peace be upon him) says that he is a man and a son of man:

John 8:40 But now ye seek to kill me, a man that hath told you the truth, which I heard from God...

Jesus kept on telling that he is the son of man as in Luke 17:22, 7:34, and in many other verses.

Also in other verses, Jesus refers to Father as his God, which clearly means that Jesus is not God, and can’t be interpreted by the human nature because the human nature is supposed to be God also:

John 20:1 7 “Do not cling to me, for I have not yet ascended to the Father; but go to my brothers and say to them, ‘I am ascending to my Father and your Father, to my God and your God.’”

Mark 12:28 And one of the scribes came up and heard them disputing with one another, and seeing that he answered them well, asked him, “Which commandment is the most important of all?” Mar 12:29 Jesus answered, “The most important is, ‘Hear, O Israel: The Lord our God, the Lord is one.

Jesus doesn’t know the hour
Mark 13:32 “But about that day or hour no one knows, not even the angels in heaven, nor the Son, but only the Father.

God is omniscient, He knows everything, and Jesus refers this to the Father. The Father is the only one who knows the hour neither Jesus nor the angels know anything about it. If Jesus doesn’t know the hour, then he is not omniscient, and since God is omniscient, then Jesus is not God.

Is Jesus omnipotent?
Jesus answers:

John 5:30 By myself I can do nothing; I judge only as I hear, and my judgment is just, for I seek not to please myself but him who sent me.

God is not only omniscient, but also omnipotent. God can do everything. This is God whom both Muslims and Christians believe in. Jesus here denies his omnipotence, but refers it to the Father, and this is an answer to what Christians say that the signs and works Jesus made prove that he is God, Jesus here answers this claim saying: “By myself I can do nothing”
In addition, Jesus needs an angel to strengthen him:

Luke 22:42 “Father, if you are willing, take this cup from me; yet not my will, but yours be done.” 43 An angel from heaven appeared to him and strengthened him.

God is the Creator; He created everything, including angels. If Jesus is God, and he created everything, why shall he need one of his creatures to strengthen him? Is the creature stronger than the Creator? Let’s think about it!

via https://jesus-is-muslim.net/en/jesus-is-muslim/jesus/what-jesus-really-said-i-am-not-god/

as a Muslim i believe : in the Absolute Oneness of God, Who is a Supreme Being free of human limitations, needs and wants. He has no partners in His Divinity. He is the Creator of everything and is completely separate from His creation, and all worship is to be directed towards Him alone.

1. Allah/God the Creator is One

2. Allah/God is the First with no beginning and the Last with no end. Everything in the universe was created by His will. He is not confined by space or time and He is the only One who is in control and provides for His creation.

3. Allah/God alone is the Almighty, the Creator, the Sovereign, and the Sustainer of everything in the whole universe. He manages all affairs. He stands in need of none of His creatures, and all His creatures depend on Him for all that they need.

4. Allah/God is the All-Hearing, the All-Seeing, and the All-Knowing. In a perfect manner, His knowledge encompasses all things, the open and the secret, and the public and the private. He knows what has happened, what will happen, and how it will happen.

5. Allah/God is the Self-existent Who was not given life, cannot be caused to die or brought back to life by anyone else.
   God is eternal, without beginning or end, and is thus a Unique Being who has no equal. see Quran Chapter 112.

In the name of God, the Gracious, the Merciful.
(( 1. Say, “He is God, the One.

1. God, the Absolute.
2. He begets not, nor was He begotten.
3. And there is nothing comparable to Him.” ))

This is a clear statement by God describing Himself to humanity without any room for confusion. God is One and is exalted above everything He creates.

This chapter of the Quran is about the oneness of God. The concept of God has been presented here in its purest form, ridding it of all polluting associations which people of every age have brought to it. There is no plurality of gods. There is only one God. All are dependent upon Him, but He is not dependent on anybody. He Himself has power over everything. He is far above being the progeny of anybody or having any offspring. He is such a unique being that there is nobody like Him or equal to Him in any manner whatsoever.

The doctrine of God’s pure unity, or The Divine oneness, is clearly stated here: God is not many , He is only One. Everyone is in need of Him ,but He is not in need of anyone. He reigns over all things of the heavens and the earth. Unlike human beings , He has no son or father. He is eternal ,without beginning or end, and is thus a Unique Being who has no equal.

This Chapter has been called the essence of the Quran. The prophet Muhammad, Peace Be Upon Him, once described this Chapter as

“ equivalent to one-third of the whole Quran ”{ Bukhari and Muslim }

1. Allah/God is the Most Gracious, the Most Merciful, and the Most Beneficent.
   If someone wants something from God, he or she can ask God directly without asking anyone else to intercede with God for him or her.

2. Who created God the creator?
   answer : one of the characteristics of the creator itself is that he is not created…If the creator was created it automatically means it’s not the creator. the creator is eternal, without beginning or end.
   { He begets not, nor was He begotten } 112:3

The names and attributes of God include the “Life-giver” and “Death-causer”. The Lord and Creator of this universe surely has the ability to cause His Creatures to die and bring them back to life just as He had already created them. It is He Who gives life to others, causes them to die and brings them back to life. Moreover, He is the Self-existent Who was not given life, cannot be caused to die or brought back to life by anyone else. as a Muslim i believe :

• God is One
• God is eternal, without beginning or end, and is thus a Unique Being who has no equal.

Fully accepting the oneness of God is to accept that He is distinct from everything else. It would not suit God’s majesty and glory to associate the limited attributes of His creation to Him because He is not restricted in any way, while His creation is. He is the First with no beginning and the Last with no end. Everything in the universe was created by His will. He is not confined by space or time and He is the only One who is in control and provides for His creation.

By definition creation is in need of a creator. For created beings to exist they must have a creator to bring them into existence.

( You Alone we worship, and you Alone we ask for help )
The Quran 1:5–6

the primary pillar of Islamic belief clearly states that there is nothing worthy of worship except Allah/God. Associating partners with God or attributing qualities of lesser beings to Him is considered to be the greatest sin in Islam.

No one has the right to be invoked, supplicated, prayed to, or shown any act of worship, but God alone. God alone is the Almighty, the Creator, the Sovereign, and the Sustainer of everything in the whole universe. He manages all affairs. He stands in need of none of His creatures, and all His creatures depend on Him for all that they need. He is the All-Hearing, the All-Seeing, and the All-Knowing. In a perfect manner, His knowledge encompasses all things, the open and the secret, and the public and the private. He knows what has happened, what will happen, and how it will happen. No affair occurs in the whole world except by His will. Whatever He wills is, and whatever He does not will is not and will never be. His will is above the will of all the creatures. He has power over all things, and He is able to do everything. He is the Most Gracious, the Most Merciful, and the Most Beneficent. In one of the sayings of the Prophet Muhammad , we are told that God is more merciful to His creatures than a mother to her child. God is far removed from injustice and tyranny. He is All-Wise in all of His actions and decrees. If someone wants something from God, he or she can ask God directly without asking anyone else to intercede with God for him or her.

source : https://medium.com/@Marytn/as-a-muslim-i-believe-e5dc12fb3e2