honestly lv 200 player plays will play like lv40 player ,the diff between, is about they know the map better or they figrue out the sens and dpi they suit for them.

also a little bit of concept, such like will u adadad to dodge bullet,or will u find cover before shooting,or in a sort distance, u shoukd not use ads, etc.

its all about concept while fighting they might have better decision .you can just watch youtube to learn more tips ,and do more pratice in shooting range, like every day u spent 10 mins to get familiar with the guns recoil,shoot dumies.

matbs lv 60 u can beat those guys u think are too hard tk difht with right now.

imo i just dont see those 100-200 player who play pubs for most really a monster, until the play rank and get stuck .like platium, then those guys starts in-depth study apex and have a visable improvement.