i remember KF1 giving me issues on Linux when i switched over years ago but i ended up changing settings or using either the linux port / proton and it worked
as for arma gold idk tbh idk what hardware you're on or what but that should be fine considering how old it is. but it's also an arma game so it's probably CPU intensive. would research it i guess idk
yeah this makes sense then actually. bazzite is installed on my SSD, but i have a 7200RPM drive for my games and that poor drive already struggling to run games