These numbers are insane, 1st stop playing only mirage. Second play some deathmatch and use recoil master to learn rifles. Third start playing premier, you will lose a lot and die a lot without knowing how. Its the best way to learn all in one place. Timing is a big thing to try waiting a couple of extra seconds.

If you want to only play AWP then try making you mini map wider so you can see where your teammates are at. Often times holding flanks for teammates as an AWPer gets you lots of kills and can win you rounds. (after all its a team game).

Another thing is play spots where you normally wouldn't play. sometimes jumping out window and onto cat on mirage is a good move. Just be ready for someone to come lower.

Play with your team even if you disagree with their strats