Any help with a little shakiness while aiming

[bronze igloo]

Im pretty sure ive had this problem always when gaming alot less noticable while gaming like apex or any other fps games
I havent aim trained alot maybe like 30h, ive tried different grips but none of them feels good in my hand. i am a wrist aimer so the vertical movement are alot harder for me than the horizontal ones but even in the horizontal moving targets my aim is kinda shaky any help?