Im in a similar position but I dont let it faze me. Im older, so loosing does not effect me as much, If people are toxic I block them, and if they are premade, which happens often, They are either super nice, or toxic as fuck, which comps me to do just what ever the fuck I want, or just troll them, until they kick me and I can play another game, notabene I never troll otherwise. The other day I was playing a game, my team smashing the other team and they looked up my profile which says im 27 years old, and the team started berating me for not having a life and shit. I just told them that I was done with work, and my pregnant wife was sleeping so it was my time and that I wanted to play a few cs games, they didnt really comment on it after that. The reason im telling you this is that almost everyone that plays MM is just blowing off steam, some people get toxic because their life is shit and they need to feel superiour in cs because they cant do it in real life. Some people play, and try to do it good so they feel good. People are different, so don't get annoyed by people, even if they are assholes, feel sorry for them. Also as a sidenote, play with friends, just one friend is good enough, makes things better. And just stop letting a Game frustrate you.