Your emotional state matters when you play. Don't let yourself get nervous. Stay calm and calculated — your main goal is to destroy the enemy throne.
Many players will tell you: people don't climb because they get nervous and start being toxic to others. Negative chat rarely makes anyone play better — in 99% of cases it makes things worse. They forget the game and think about how to reply to you, not how to win. They might stop trying, go AFK, intentionally throw, or quit and leave.
A lot of people play for fun, however it goes. Don't fixate on others. Focus entirely on your own game. I've won plenty of matches without even noticing someone was feeding hard, was AFK, or had no items.
