Play rumble to work on gunskill. It forces you to win gunfights quickly in high pressure situations. Then play solo elim to work on your trials game. Most seem to play both the same way so you'll get the hang of where to anticipate pushes & where to get easy picks. Definitely get a few friends you can play with often. I've found a good teammate that I did carries with yesterday & Friday. Our chemistry is good to the point we went 115-7 just helping people go flawless.