Need to contact LOL to send them pictures of the chat so i can show them how toxic this guy was.

Can someone put a link or help me on how to do this. He was talking crap how he wont get banned and i will bc he got all his friends to report me and none of them reported him even tho i did nothing wrong and he was cussing at me the whole game and after the game too. Dude was toxic af and made me so mad that i feel like i have to do this to get ppl like this off the game. And could someone tell me if thats true or not that if someone doest get reported enough times at the end of the game LOL wont even look at it? Bc if so thats stupid! Because what if someone is only toxic to one other person on the team and at the end of the game the rest of the team didnt report them bc they didnt care and just wanted to get to the next game or like my situation where hes playing with some of his friends and they are toxic af but there is only 1 person on the team that will report them? Need help really need to get players like that off the game that play in partys and think they can do whatever they want bc they know their friends wont report them.