Out of environment, I have to form a rule overriding summoner's code as it's insufficient.

Respect your teammates according to their skills, knowledge, and gameplays. That's my number one rule in ranked only. In anything else like normal or aram, I just have fun and even die fun laughing at my hilarious blunders and others. However, lately, there is a slew of players who are performing subpar or got misplaced far above where they are supposed to be. Any wins I got is because the enemy team is much inferior, not from outplaying. It rankles my mentality pretty hard as I want consistent matches against good enemies, playing our best without losing to pure weakness, and learning much as possible to improve in later matches. It's hard to even have good mentality in this kind of set up. All it comes down to is matchmaking... Matchmaking itself is a source of all toxicity. Before ranked, toxicity wasn't even known. After first season, toxicity became rampant...

A game last 30 to an hour and you can afford only several hours of it. That's about five games max. Now, almost four of those five games, you get ridiculously unbalanced matchup. Not good day at all. Now imagine this persisting almost every fucking day! Riot still focusing on story or anything else. Hell, ninety percent of their brainstorming got shelved instead of going forward to help improve the game.