How do I learn problem solving skill in programming?

One of the biggest defects that I've is that I can't solve problems. Make a snake game? I've no idea how to proceed. Build a tic tac toe, I've no idea how to proceed. Build a arkanoid, I've no idea how to proceed. I read about them, I read the code, I still have no idea what is going on. I try to watch tutorial, I've no idea why are they doing it. I try to search stackoverflow, I don't understand why that solution works and how to develop that solution on your own.

Honestly, programming is unlearnable for me. How do I make it learnable?