The easiest way I’ve found my game folders through Proton is to use KDE Runner. I look up the game on PCGamingWiki and find the Steam ID of the game under Game data then Configuration file(s) location then i.e. 3321460 for Crimson Desert. So, I put 3321460 into KRunner, and it will usually show me the folder. Then I just save the top level folder compatdata onto my Dolphin Places for easier finding later. I still have to find the Steam ID for the game on PCGW, but the folder is easier to use to search than KRunner sometimes. :-]
The easiest way I’ve found my game folders through Proton is to use KDE Runner. I look up the game on PCGamingWiki and find the Steam ID of the game under Game data then Configuration file(s) location then i.e. 3321460 for Crimson Desert. So, I put 3321460 into KRunner, and it will usually show me the folder. Then I just save the top level folder compatdata onto my Dolphin Places for easier finding later. I still have to find the Steam ID for the game on PCGW, but the folder is easier to use to search than KRunner sometimes. :-]