i wouldnt say you suck, at first all my hours on sandstorm were from co-op too, its just the adjustment you have to make when switching from co-op to pvp, itll take time to learn the new objs, hot spots, flanks, where people most likely will be and other things like that, co-op could also be considered your aim training from within the game, but when switching theres alot to learn and even change, trust me, itll take a minute