Make sure you meet the minimum system requirements.
The problem is that multiplayer does not exist on Linux, and most people would prefer to use the Windows version on Linux to play multiplayer on Windows, because that is where the player base is. Please ignore the fact that there is a special version for the Linux platform. It seems that the Steam version of Wine/Proton lacks the libraries the game wants to find, while the Lutris version of Wine/Proton installs them by default. The game works without any problem with the Lutris script. The game crashes when you try to run the Windows version with Steam Play. But the good news is that you can fix it. Total War: WARHAMMER II continues to crash while you are in the middle of the game? You are not alone! Many players report this.
Update: Stop getting error messages and slow down your system with our optimization tool. Disable the Blood for the Blood God DLC Until a Patch is Released.Check the integrity of your game files.Make sure you meet the minimum system requirements.