The game bo2 works great but the tricky part is finding the pathway where the game is located at. I had this all setup until an update screwed it up and now I have to dig through the file directory again. Next time I figure it out I will post the steps for the Nobara distro.
I play Plutonium BO2 and MW3 semi regularly. Would play more BO1 but it kinda runs like shit through Wine/Proton sadly…
I installed it through Lutris and also had issues with updates until I switched the wine version to GE-Proton 9-20 and that seemed to fix that.
And yeah getting used to the Linux file directory is kinda a pain at first but something you gotta get used to. In Wine games you’ll find your root directory listed as Z: you should be able to find your Steam directory in.
/home/YOURUSERNAME/.steam/steam/steamapps/common/
Or if you have other drives mounted you should know where you mounted them, It’s normally in /run/media/
Another tip would be to cap your FPS to something like 125 because them old Cod games start acting weird at higher frame rates, and you want to keep the FPS as consistent as you can since the mouse sensitive is also tied to the frame rate for some stupid reason!