Exaggerated drop in game volume after upgrading from Windows 10 to 11

Basically i recently upgraded from Windows 10 to Windows 11, and the game volume has become unplayable. The sound volume has been lowered drastically, and I can't play the game. The only change I made was upgrading from Windows 10 to Windows 11...

I spent over an hour talking to support people and after following all the steps they suggested, nothing solved the problem...

With these sound problems, the game is completely unplayable... and I don't know what to do anymore.