Many moba games out there League is not that special. Matchmaking is a horror movie, trolls and afkers all over.
And besides the comunity Riot itself will ban you for typing. YEAH you read it right Riot will give you the option to chat with teammates and enemies but if you type too much you get banned. Even if you don't use profanity you get banned, if a premade team of 5 decides to report you for no reason you get banned according to RIOT. You can get banned for typing to someone "You're bad", which is not offensive in any way. And let alone swearing in game. Probably it's Riot's strategy to get more users, ban the players so they can create a new account and start over again. More users more money.
I just got banned for the 4th time, for typing. I'm not saying i didn't ever swear in this game, but this last ban i never used profanity i just typed a lot , replying to enemy taunts, and in the end i get banned.
Uninstalled this game and i suggest you do the same before you get addicted, and start creating accounts over and over.
There used to be people who decided if something is offensive and should be banned, today everything is done by robots. And robots just count and ban , they have no logic. Well done Riot. Know that everyone feels this way about the way you treat the people who are giving you money.