The Sims 4 is "not responding" when opening the game.

girlinyellow​  Is the Windows account you're using now tied to your Microsoft account?  The answer is probably yes unless you went out of your way to avoid it.  Point is, please create a new admin Windows account, and make it local, as in, you don't link it to your MS account or any email address.  You can keep declining to provide an email until you're offered some security questions instead.

Try playing in the new account, and let me know how it goes.