I migrated almost everything on Linux and, low and behold, the only game giving me issues is DOTA2.
I’m using Steam flatpack, it runs, I can play against bots, I can spectate games. The moment i try to play in matchmaking a VAC messadge pops up preventing me from starting a game.
I tried reinstalling, veryfying the files, installing on a differend hard drive, scanning the disks for errors.
Nothing worked. Any idea?
Edit: thanks guys, it was actually Proton!
I had no idea, I had some issues running native and I somewhat gaslight myself into thinking Valve somehow deprioritized Linux support.
I guess my problem is solved then. Thanks!