Understand that people have bad games
I can't tell you how many times in this game, that someone on my team dies once and some yells "mid died gg" or "xx champion is fed gg". It's crazy that for the most part, some teams defeat themselves from the inside before the enemy team defeats you. You're supposed to have 4 teammates and 5 enemies, not 9 enemies. People, especially at lower elos, really disregard the power of positive morale.