One thing you’ll have to do (which is kind of annoying that it isn’t enabled by default) is go into the steam options and toggle “Enable Steam Play for all other titles”. That enables proton/wine for everything in your library. In the early days of Steam on Linux Valve setup a white list of games that ran under Wine that mostly contains their own titles in it, and for some reason they just never removed that behavior even though that list is unmaintained these days.