CoD: Blops 3

I guess I'm just not that great at multiplayer. It seems like some players seem to be playing at an advantage. Moving way too fast killing too easy. Sometimes I'll have some shots in them and then I'll be shot down. A 1:1 ratio is a good round. Lots of times its 1:3 and worse. Do players snort crack and then put the sensitivity on raging psychopath?

I'm sure there are several factors. But it does get annoying. Nothing new with this game.