hmm, just play more games. its not like an fps where you can hop in an aim trainer.
you just have to play a lot of matches and you will get better. the game is hard but its easier to learn than it ever has been.
check out the replays section and study how people move. there are also very good tutorials that would help you a lot.
for example if you want to learn more about aikido you can just search the keyword "aikido" in the tutorials section.
we've all been where you are and the best advice i have is to make friends and have fun, everything else will come in time <3