Learn about pre-aiming, crosshair placement, angle advantage and the different types of peeking. Probably lower your sensitivity (the average pro eDPS is 278. (There’s some good videos on YouTube that explain all of these) and if you’re really keen, but “aimbeast” on steam.
yes playing more will help, but research is king for a new player and there is heaps you can learn that you won’t learn from just getting one-tapped 1000 times in unrated