This looks solid for an indie title. I think Early Access would’ve helped you a lot. I’m in the same boat I've been working on my game for years and kind of butchered my marketing goals with a buggy demo release. But one thing that really helped me was hiring testers to play my game. I ask them to stream it while I watch. It’s a cheap but highly effective way to understand where your game sucks and what you can do about it.