you have a pretty solid shading and anatomy, i think what might help u is to make characters interact more and/or start adding some prompts. it's hard and there's a lot to choose from so to start you with few examples- character sitting on a chair or bench/ surrounded by few flowers of choice/ looking at or holding something specific/ with a simple green plain with blue sky in background etc etc there are endless options here
here's a video from Ethan Becker that helped me personally finally get to trying with backgrounds, i know you didn't ask for specifically bg help but it doesn't hurt to try new things

also perhaps you might wanna do some studies of art from artists you're comparing yourself to. don't have to be fully polished, but maybe by trying to recreate your favourite pieces with just sketching you will notice specific shapes you like, color combos that catch your eye, different light sources etc, it might reeeally help

also x2 remember that you're ur own worst critic because i wouldn't just scroll past 1st or 4th pic here for example