hi guys i have a fair amount of hours in pubg, can spray good at close but struggle to spray with m4 from a decent range anyone have tips to improve is there a certain recoil pattern to practice ?? thanks

Pull your mouse down as hard as you can to level out the recoil.

https://www.youtube.com/watch?v=R_b7OuFkWYQ

use UMP45 or Vector instead.
Assault rifles behave horrible in this game.

You have to pull it as smooth as possible only giving a fast pull for first 2-3 bullets.
The more even your pull is the less vertical recoil you will have leaving only horizontal recoil which could not be controlled,only compensated with angular grip and compensator.