Also, don't take ragers seriously or let them get to you.
When someone rages, tell them to stop.
If they don't, vote kick them or leave. Don't play with people like that.

If someone is better than you, then they should use their skill to help make up for your lack of skill or give you good advice.
Listen to good advice, but don't play with people who won't be team players and don't provide constructive feedback.