Beside we-know-which games that use a root-kit anti-cheat, which games you think doesn’t work on Linux or work terribly or straight out not work on Linux on first-day?
I don’t play those and I don’t own them on Steam. Out of 600+ games I own on Steam, everything literally run without me touch my terminal once.
Unless you don’t think proton is good, then you might be mistaken somewhere. It’s straight magic