Almost all the “ideas” in your list are “make X with Y”. They’re not unique by definition. It’s a nice exercise for the brain, but you won’t really ship anything people use that way.
The issue is: we don't know which ideas are good or bad.
The stats from Venture Capital markets are showing that clearly.
Before someone even gets a meeting with a good VC firm the idea is already filtered 100-1 if not 1000-1.
Of those who get the meeting, maybe 1 in 100 get an investment.
Of those that get an investment, out of 10 maybe 1 or 2 become the really great successes and the remaining 8 are somewhere between "mild return" and "complete failure".
Since even the best of the best cannot tell what idea is good and which one is bad, we value all ideas as bad ideas i.e. at zero.
I'm quite sure that in that list I've posted there are at least few good ideas i.e. ideas that, when well executed, would lead to a profitable, solo business.
I think this is part of the issue. Unlike the GP, I think the expectation is often both difficult and sometimes expensive. Often ideas seem bad only because they were executed poorly; good execution acts as a type of filter.
That might appear to be the case, but probably isn’t. There’s often not anything harder to implement a CRUD app that solves a novel problem than implementing a CRUD app that solves the same problem as 100 other people are hawking.
Figuring out what problem to solve is the most difficult part for most side projects. Unless you personally have an unsolved problem that by chance many other people also have, finding something good requires either luck or talking to many potential customers.
I think one way to narrow down to something relatively unique is to look for the Ven diagram of skills and interests. If you layer enough, there's bound to be some areas where relatively few people how the knowledge and passion to pursue. It's no guarantee you'll make money, but it at least helps identify areas you can stand out.
How thorough have you been in researching competitors? I'm willing to bet that there'll be some differences either in target market or execution. Even if it's effectively the same product maybe there's something they've missed which would give you a significant advantage early on?
I have literally hundreds of ideas.
As an experiment I put them on a website for anyone to see and "steal": https://blog.kowalczyk.info/article/e4132d5a44014b2aad81d815...
I'm not saying those are all great, profitable ideas.
I'm saying that they are doable by a competent programmer and unique enough. Certainly not "done a zillion times by others".