If I buy games on Xbox One then they are also on my PC Xbox account or not
No, you buy the game for the Xbox, not for the PC.
Okay thanks
I just checked. Yes, they can be seen. They can't play, of course, if somehow a thought was there.
Okay thanks
Well, if I'm not mistaken, that would work. In any case, your digital games and only with Windows 10.
You need to sign in to your PC with the same Microsoft account you're signed in to in your box. Then on the PC times the Microsoft Store open and there's a tab "Games". Look, if that's what of Xbox Live games or something.