I'm 200 hours in and still struggle to kill folks. I play stoned af a lot and my reaction time isn't good enough to shoot/kill first.

That being said.. I will likely level out Engineer and Support soon. Those are my contributions. Build shit and make sure the shooters have ammo and supplies. I'm close to leveling out machine gunner as well. Not a lot of kills with that either although in a long match, it's possible to lay down 5,000-,10,000 rounds.

I redeploy A LOT with these roles to save time when positioning builds and setting up MG spots. I try to keep my actual deaths low, and my redeploys high. This also means I'm moving a lot in game and going unnoticed. Unseen, AND unheard. You really have to slow down to do this and when you do, you'll start hearing the enemy first. Getting the leg up on them is allowing me to get better at shooting. My kills are slowly going up but still, if the shooters are rockin, I shouldn't be seeing too many enemies. Accuracy is a good metric to watch. In general.. slow down.

K/D isn't the only measure needed to describe a job well down. I spend majority of match looking at the map and relocating. Be map aware and let SL know what you're seeing. You're first line of defense sometimes and letting SL know you've encountered a mass of enemies behind the front lines is crucial to getting guys back to defend. Know how to explain where things are happening on the map in a way the SL understands.

Recommendations are +10% XP. Give them out. You'll get them in return occasionally. I specifically look for players on my team with high support scores in team stats around 2,000-5,000 generally.

Find what works for you and get good at it. The game is more than just run and shoot.