If you're going up against players that have better aim than you, at least make yourself hard to kill. Im trash, but at least I'll be a pain in the patootie all game by staying alive and picking my battles. You're spawning and dying 1 by 1 and not trading off any frags. Wait for your teammates, attack from different angles, and use your nades. Basic principles across all shooters.
The best apb players of all time cannot land every shot on you if you have cover and lateral movement. Make them miss.