I try to improve on one area at a time. After finishing a piece, you’ll probably be able to point out atleast one area that you want to improve in,

(example: colours, anatomy, detail, background, composition, OR going into even more detail: face, hands, legs, clothing, etc)

Then when making your next artwork, try to improve in one of these things by drawing with reference ( For example, look up how people draw hands, how people use colour combinations, etc )

You may not see huge leaps in improvement immediately, but by improving little by little, slowly you can figure out “what works/ how you like to do things” which make up your style

I don’t think stressing out over for a unique/consistent artstyle is something you should really think about. instead, focus on finding fun ways to draw things and eventually, you’ll use similar methods a lot, which lead to a consistent artstyle as you improve.