Steam's Wine thing works quite well. And yes you need to fiddle and do work arounds including giving up getting some games to work.
It's Linux, what software doesn't need fiddling to work?
Yeah, but it's not worth. Apparently the "gold" list on ProtonDB is games that allegedly work with tweaks. So like, drop in this random DLL and it might fix the game. I'm not gonna spend time on that.
Last one I ever tried was https://www.protondb.com/app/813780 with comments like "works perfectly, except multiplayer is completely broken" and the workaround has changed 3 times so far, also it lags no matter what. Gave up after stealing 4 different DLLs from Windows. It doesn't even have anticheat, it's just cause of some obscure math library.
Yeah Proton covers a lot of titles. It’s mainly games that use the most draconian forms of anticheat that don’t work.