Found a Way to Make Games More Relaxing for Myself...
Muting the in-game announcer's voice. It has seriously made my games more relaxed and less frustrating in general. No more "An enemy is gooodlike!" or "Enemy killing spreeee" in a tone that makes it sound like the end of the world is being mourned in-game.
I recommend this to anyone who wants to try a new way to reduce stress during games that has nothing to do with the players themselves or the in-game chat. :D