[2020] oyun açılmıyor yardım edermisiniz

How far do you get? Do you see the launcher after clicking Play in Steam? Do you get any errors when clicking Play in the launcher? Do you get to the main menu of the game?

That sounds like you have problems with the launcher. Try the steps explained in this post:
https://steamcommunity.com/app/255710/discussions/0/1742265315844206043/

If that doesn't help, you will need to follow the steps at the end to contact Paradox Support.