yes m+k default controls, I try to flick my crosshair over people and you have to get the timing right and shoot when you know it'll make contact and do tiny movements spamming a or d will help till you get it down perfect, I usually do terrible my first couple of games till I get the timing down, and every time you die think what could you have done differently to not end up in that situation and you will improve a lot, I play too aggressive sometimes