IF you cant even shoot some paint with a rattle can and use 2 metallics and 1 contrast paint then what the fuck are you even doing. (For reference: Ultramarine blue rattle can, whatever base color for the gun contrast paint, gold metallic, silver metallic). I assume if you dont even paint or hate painting that your opinion is largely irrelevent because youre not engaging with 1/3 of the core hobby. Its a Great Filter for retards.
Straight up I dont know your situation, but I do know that if you enjoy and have fun painting then I think you should, even if its not "good". There are a lot of techniques that dont require a steady hand, and in a hobby dominated largely by the older crowd there are plenty of hobbyists with nerve problems/shakey hands. I wish you luck though friend, heres a few examples Ive found on YT of people dealing with that exact issue.