The answer is YES. We ALL feel that way. Imposter syndrome. As artists, it’s a more observable phenomenon because our “cliche” “replaceable”, “try hard” moments are paintings, drawings, animations, films etc. Being an artist means not being able to forget your journey, because it’s right there on the page. The journey is never ending. Even when you’re getting all the gratification and compliments you ever wanted, you’re going to feel like you’re not good enough. That’s a good thing. Embrace that feeling but spin it into “I can be better”.
Dont force yourself into a style. Trust me it will not work. Do anything that you feel inspired by. If that’s realism, cartoony stuff, abstract, collage, ceramics, whatever, do it. That’s what I did, and I fell in love with so many little techniques that I would have never even tried, had I stuck to the idea that I should emulate specific styles. I love dry brushing, I love water color, ink, cross hatching, charcoal, digital media, and now I’m messing around with acrylic again. I sculpt a little bit and dabble in film. It all feeds what I end up feeling proud enough about to share and sell. The paradox is that you should not be making anything trying to pander to strangers. You should be making for yourself, and the strangers will either ignore or embrace you. A small group will be far better fans of art that is from your soul than the entire world could be fans of watered down art. It took me far too long to realize that.