I have been using the 1-strike rule in which when a player shows toxicity the first time, I mute them instantly. I also do my part as a player to report players who are toxic, griefing, and those who are afks. I think I have already reported a lot of players for these kinds of behavior and I think it would be nice if I know that they have already received penalty. A lot of players are really toxic and it ruins the game especially for beginners. They could also introduce something like the honor system on league which might stop people from being toxic.