How to deal with people insulting me?
Ever since I started climbing the elo ladder, I was carefully watching how the community in every new league is different compared to the previous one. I started the climb in Bronze 5 where I ended up after completing my placements the day I hit lvl 30. The community in Bronze was extremely toxic but not in a way that could seriously hurt somebody. These were mostly players below the age of 15 and it was actually quite funny to watch it sometimes.
In Silver, players was chatting much less, focusing mostly on their flawless gameplay. Sometimes there was a rager but it also was nothing dangerous.
Gold 5-2 was pretty much the same, except that there were a lot of players who were always focusing on others' gameplay and giving them - in they opinion - constructive criticism. Funny as hell.
And now I'm Gold 1, tilting between 0 and 90 LP. I also have a second account in Platinum and exactly the same thing happens there. In pretty much every game, after you make a mistake, you're getting directly insulted and humiliated by at least one player from your, and sometimes even enemy team. I'm an ADC main and it happens to everyone that you're sometimes out of position. It's bad, but it's not the end of the world. However, each and every time it happens I know what I can expect to see in chat.
"vayne you suck uninstall and kill urself"
"omg that vayne"
"rito why am I matched with these noobs in my team?"
"/all lol vayne you suck xD"
I never, ever, raged before in League. I usually muted toxic people as soon as they started insulting anyone in chat. Sometimes I even did "/mute all" at the very start of the game if my team started to argue in champion select. And what I enjoyed the most is that I knew that people who deserved it were added to my ignore list forever. Now it changed, as /mute works for one game only. Because of that, even when I mute somebody, I usually unmute them after a few minutes because I feel like it doesn't matter if they're muted, since I will see they rage anyway in the post-game screen. I also don't want to feel like they're trashtalking me behind my back.
Recently, my attitude changed dramatically. When someone starts insulting me I usually get really angry and reply with a equally bad language to them. I even received a warning today that I was recently reported for negative attitude. I know I deserve it though.
Because of all that, I don't feel like I want t play League anymore. I still love watching streams and LCS but as soon as I launch the client, I don't really want to click that red "Play" button. Also my performance in games got much worse. I used to be able to carry most of the games because I was playing to win. Now I usually give up after I get insulted for the first time and don't care about the result of the game - just want it to finish as soon as possible so I don't have to play with these people anymore.
How should I deal with it? What can I do not to care about people insulting me and focus on actually winning the game again?