I don`t know if you want critique, but it`s clear to me from looking at this stuff that you are perhaps emulating "styles" of pixel art too much, perhaps inventing "styles" when there are none (and where there are, instead, actual design skills that are applicable on any artistic medium) and not focusing on your fundamentals. You suffer in anatomy and lighting, your errors showing under the less successful attempts to hide them with pixel art limitations and stylistics. If you really want to progress as an artist, my advice would be to hit the books on anatomy, perspective and basic pencil shading (there are lots and lots of books online) before returning to pixel art. Do not concern yourself with style (I especially found mentions of "custom style" absurd. What does that even mean?) because actual personal aesthetic is emergent out of skillful, singular application of the basic artistic skills. It`s not something you search for.
If you`re about 14-15 or so, take everything I just said one level less drastically than it sounds, you have time. If you`re an adult though, you should rush rush rush back to the fundamentals, otherwise you might get trapped in this for a long time.
I mean no offense. This is a critique board and this is critique. Happy new year.