Too hard game, just pissed off and about to quit.

This game simply to hard to accomplish. talking about multiplayer maps with 64 players. ive terrible score terrible k/d im really demotivated to continue.
im always dead fom any distance, its like enemy appears near me and shot me to death. i cant kill anyone even with machineguns or single blot action or whatever. im really demotivated.
i love the game, im an older player of BF series but i cant continue with this one. Too hard too punishment and aat the end of the game sadness is onle feeling ive.
any suggestions about not quitting and disinstall this game?
thank you