I've seen people on my friends list that are good individually but they struggle to win with their team. Upon further review, their friends are notably worse than they are. They top frag many games but lose often. What are effective ways...

So my last game we lost 8-13 in comp. I was playing chamber and except 2 games I was the last or second last one to die, we did well in attack but we lost defending. I was watching the b on ice box alone and let's say everytime they pushed...