git good mate, Deathmatch till you can 1 tap a nigga.
Once you've got the aim, learn pop flashes/smokes.
did tons of practicing in dm only hs , aim and other servers , i know smokes/flashes on 60% of the maps ( not all , just the basic ones and some tricky i learned offline with bots).
the fact is ....you could be the best player in the world but when you have 0 collaboration in the team it's pretty much useless to play when your team is composed by :
1) The afk
2) Russian with mic that speaks only russian and insult you whatever you are doing
3) 13 y/o that just insult you
4) The troll/smurf that plays only to harass people
yes , you can do your best but i stop talking after i see people don't care about the match.
without calls you can't really do nothing , maybe you can try to ninja plant , kill 1 or 2 but you can't win the match alone that's what i mean.
in 4 it's another story , you can actually win if you speak other than shoot.
that's matter of luck i assume....some mathces you get a team that want to win and make calls , others you asking yourself why you are still playing the game or you didn't uninstall.