There is ProtonDB (Or WineDB) where you can check supposed working games (at least the emulated ones) and how well they work. Often if they don't work out of th

There is ProtonDB (Or WineDB) where you can check supposed working games (at least the emulated ones) and how well they work. Often if they don't work out of the box a fitting patch is posted there and reality is sometimes a older ProtonDB build works better. However in my experience games just work these days in 9 of 10 cases. And if it doesn't it's the launcher and not the game in the far majority of cases, a issue only found with big shit studios.