Listen I stink at this game and learning. If you see that you have a newer player with low kills, don't just leave them. Maybe guide them a bit, direct with ping and make sure they have a gun before you go looking for a battle.
You want to win? Me too! And yes I'd rather help in some way not be carried.
A big thanks to the ahole who did exactly what I outlined above last night and then decided to trash on me. We are a team after all, did you do your part? Nope... I'm sorry I don't have your God like abilities but then again if you were that good you should killed that squad 2v3
These kinds of games tend to have a pretty salty playerbase. especially since chances of winning are so low.
Try to be social and add the players who are cool to your friendlist. Make a little community of your own. Best remedy imho.