[2021] How should i get more RP?

Have you tried to cap points? It really helps win the battles.

My point still stays. Many times in battle even suicide action to cap point can change the battle. From your post, looks like you stay behind teammates and then you are upset, because you lose the battle. Sometimes maybe try to take matters into your own hands.

In GF you win (most) battles not by kills, but by ticket bleed. 1 kill = -100 tickets to enemy team. That same -100 ticket is just few second with cap advantage. I doubt you are able to kill enemy every few seconds. So at the end of the day, having more caps is (for most time during battle) more important, than killing.