Welcome to the steemit community @nadiya14!
There are many contests on here such as @deemarshall food contests, drawing contests and colouring contests, and Zen Colouring Contest by @magiccleatus.
There are many many other, and I'm sure given time, you will find quite a few.
So we sincerely hope you will find a new home here, and find what you are looking for; and a quick suggestion, do not use your master key for anything here except recovering your account or resetting your keys. Use the posting key for posting, and the active key for your temporary wallet transactions.
Other than that, I found this post because @heyhaveyamet promoted it and they also have an excellent Discord server called Steem Terminal where you can go to get questions answered and get help from willing people there.
Good luck, onward and upward!