Ask HN: Side income for non-creative developer?

I've been coding since 14 years and have decent programming skills in both backend and UI. However ideas don't come to me naturally and my communication/people skills are way below average. Is there an avenue where I can use my own skills to earn $500-1000 per month? Tried freelancing and don't want to do it again. I tried teaming up with business minded people before and ended up feeling that I was being used. I even tried dropshipping out of desperation and ended up spending way more money in advertising without any great results. I would appreciate any specific ideas. If not, what should I do to be more creative and business minded? Is that even possible in late 30s?