please DO NOT EVER EVER EVER listen to those "how to make an OC that people will like" or "fixing someone's art" avoid them like the plague, be yourself and have fun there will always be an audience for your character even if it's really small (but is yours and you do whatever you want)
get more passionate. that's my advice. being an artist is super lonely. being a writer is the loneliest. mapping out the wrinkles of your brain and sharing it with the world is vulnerable, especially when no one else seems to care, but passion is the secret. get so passionate it doesn't even matter.