>>387198382
It's pretty tough as the regulars have hundreds of hours in the game. You've got to have a positive attitude to understand that you're still contributing to the team even when you're stuggling for kills yourself. When I first started that meant celebrating even when I simply dealt damage to the top players on the enemy team so my own team would have an easier time killing them. Ambush kills and powerful defensive positions were useful too.

Beyond that just covering exposed angles for your teammates and staying alive as long as possible is good. We all feel better about taking on a 2v2 with you on our side than a 1v2 without.