Who Is Moshiach (the Jewish Messiah)?...What Is the Jewish Belief About Moshiach (Messiah)?...Moshiach (Messiah) and the Future Redemption

"The Messianic Redemption will be ushered in by a person, a human leader, a descendant of Kings David and Solomon, who will reinstate the Davidic royal dynasty. According to tradition, Moshiach will be wiser than Solomon, and a prophet around the level of Moses.

Ever since the destruction of the Holy Temple, in every generation there is an individual, a scion of the House of David, who has the potential to be the Moshiach. If at any moment the Jews are worthy of redemption, this person would be directed from Above to assume the role of the redeemer.

During the Messianic Era, the Moshiach will serve a dual role. He will be a monarch, ruling over all of humanity with kindness and justice, and upholding the law of the Torah—613 commandments for the Jews, and seven for the non-Jews"
https://www.chabad.org/library/article_cdo/aid/1121893/jewish/Who-Is-Moshiach-the-Jewish-Messiah.htm

"Moshiach is the Hebrew word for “messiah.” The word messiah in English means a savior or a “hoped-for deliverer.” The word moshiach in Hebrew actually means “anointed.” In Biblical Hebrew, the title moshiach was bestowed on somebody who had attained a position of nobility and greatness. For example, the high priest is referred to as the kohen ha-moshiach.

In Talmudic literature the title Moshiach, or Melech HaMoshiach (the King Messiah), is reserved for the Jewish leader who will redeem Israel in the End of Days."
https://www.chabad.org/library/article_cdo/aid/108400/jewish/The-End-of-Days.htm

"Moshiach (also known as messiah or mashiach) is the long awaited Jewish leader who will usher in an era of world peace and G‑dly awareness.

The Jewish messiah is a human being, a descendant of King David, who will lead the Jewish people back to the Land of Israel, where they serve G‑d in peace, leading the nations of the world in attaining an understanding of the Creator.

Messiah will also rebuild the Holy Temple in Jerusalem, establishing an era of peace and prosperity that will endure forever."
https://www.chabad.org/library/article_cdo/aid/332562/jewish/Moshiach-101.htm