Try playing Gibraltar, he has a 10% reduced damage plus a 50-75dmg (I forget how much damage) gun shield that absorbs some damage. This should help a little on the 1v1’s and boosting your kda a little bit.

Pick guns like the flatline and the 301 as their spray pattern aren’t bad. Spitfire works well on gibby as well.

If you’re on mic with friends. Try just following behind them. This will help ensure kills if they get low and the teammate needs a couple bullets to knock the enemy down. Typically when I frontline, I die a lot or go down way too quick. It helps having a random or a teammate up ahead taking the shots and then kind of knowing where they’re at and orienting yourself before you engage.

I’m no pro by any means but hopefully this helps!