Yup this is exactly on point, but you'll get down voted into oblivion. Anyone who says report in a game should be worthy of a ban. It makes everything negative, and its a defensive mechanism for pussies who have big egos. Best thing you can do is to just try and take things into a better context and try to be as nice as possible and do not spam unless needed. Some people are truly uncelpable tho and for those people I suggest just going afk as soon as you have verified there is no point, there is not as extreme punishment for going afk as there is for getting in an argument with a defensive mental midget. Most people say mute all/ play your own game..you are a part of the problem, feeding it. ITS a team game and communication is needed, and some people who are bad need to be told what to do to win. I do it all the time and it has worked successfully and I've gotten much better for it.
BEST ADVICE, in champ select link a discord. People are less of a pussy when they area on mic than behind keyboard, the convo will most likely be more civil as well as there is some form of identity attached. Seriously the people acting defensive getting in their own shell and just spamming report and flaming are the problem, not the people who are trying to give reasonable instructions to win the game. Fix this cancer.