You'll definitely experience a lot of rage and stuff but you need to expect this in any game that you reach endgame in. People will become much more serious and frustrated because content will increase in difficulty. The problem with this game is, there are a LOT of casuals and the "elitists" don't feel like dealing with them. I would just Duty Find things to learn the fights (although DF players often times rage as well). It's your best bet, or join a casual FC.