> I've been reading that "ideas are cheap" for over a decade now, but I can honestly say that I haven't once come up with an idea that would make any money.

Ideas are cheap.

Good ideas are darned hard to find and even harder to recognize.

Idk either and I’m in the same situation trying to find something that will stick (I think they call it product market fit?) and people/businesses will pay for. I’m sure I’ll figure something out eventually.

One thing you can try is just talk to everyone. Literally everyone. I’m a super introvert and socially awkward, but if I’m standing at the bus stop or in a Starbucks I’ll talk to people and 9/10 times they will talk. Sometimes they’re people who run or work at companies in industries unfamiliar to me (construction materials, biologist, textile) and they complain about what sucks. Just keep an open ear and hopefully you can find something interesting and compelling that you can build for. Good luck!