I started out in 2014, and pretty much what I did was look to see if there was a Steam logo on the Steam store page to indicate Linux compatibility. With Proton in the last few years, I just don’t really worry about it. I will say my tastes have just about always lined up with the kinds of games, the kinds of studios, that are likely to publish for Linux, the nerd shit like Kerbal Space Program and Factorio. I don’t play Call of Fifa, Modern Fortnite or whatever.