Learn how to aim, how to spray well.
Then go to 128 thicc ffa dm servers.
Then play on retake servers.
Then make ur faceit 10 lvl.
Then make friends.
Then Faceit_Mikey will kick you soon axaxaxaxaxaxaxa
Learn positioning (As CT) and common preaiming angles (as T), this can be done by watching pros play etc.
Practice aim (Download aim_botz from the workshop) and spraying (recoilmaster, also on workshop)
Some basic smokes and flashes will be useful but not necessary, there are plenty of helpful tutorials on yt for that though