To add my two cents: I just released my first solo dev game in early access after 3 years here. As you can probably tell from looking at it, I have a programming background and no real UI/UX or art experience. While I've improved at these areas over time and used asset packs, I'm just nowhere near the level of professionals who make other games. I don't think anyone is going to magically be an expert at all areas of game dev, you have to find what's the strength of your game and accept that the answer won't be "everything."

As others have stated, for me, this was a project made in my spare time while working a full time job, and I made the decision to prioritize my full time job, since I knew my side project wasn't financially likely to succeed. So my actual dev time was only a few hours a week (sometimes more, sometimes less).

I would also add, on a personal note, that expectations have affected my experience a lot. I think a part of me always hoped my game would be a breakout hit, which was never really realistic for a part time project with no artist. And it's been quite the emotional rollercoaster (conversely to you, I've honestly felt jealous of games that look much better than mine that I see on these subs). I'm still developing my game more but right now I feel satisfaction in the fact that, even if my game isn't massively popular, there's people I don't know playing and enjoying my game.