just looking for someone to give tips

Hey im a pretty good player but would like some help from someone pretty good, cause id like to be doing some tournaments or just to be better in game i actualy got a good average of kill in each game and a good average of death to but would like to get the death down...
and also my sniping is sucky a bit, wath's better, awm or dsr?
well thanks to anyone who'd like to help :)

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