Maybe try out a smaller map Dj. Like Metro and Locker, they are more linear and you rank up faster because the action is so up close and personal. On the larger maps you'll spend half your time trying to reach a flag to only end up being shot halfway there and they are so large it's not hard to get lost (in a sense). But stick with it, it's like golf, you play 18 holes and think why the hell I am out here until you hit that one shot and it brings all that excitement back. Below is what i was mentioning before, I came in 2nd on my team with only 4 kills but I had 42 revives and I not sure how many heals, but it doesn't always have to be about the kills.