ADS: Using sights or a scope is more accurate than hip firing.
Crouch: Crouching while shooting helps with controlling recoil and reduces weapon sway.
Hold Breath 'Left Shift': Hold your breath to reduce weapon sway and recoil. Holding your breath also zooms in if using a Red Dot or Holographic sight.
Prone: Going prone reduces recoil and weapon sway. Some weapons have a built in Bi-pod that deploy when you are prone, greatly reducing recoil.
The Breath Gauge is to the right of your HP bar.
You will slowly deplete the Breath Gauge while holding 'Left Shift'.
The Breath Gauge turns red when depleted.
It takes 5 seconds for the breath gauge to refill.
Find a comfortable Mouse Sensitivity.
Steadying your breath in real life helps keep you calm and your muscles loose.
Holding your breath will zoom in your Red Dot or Holographic sight.