These things don't have pent up demand, and you're not solving meaningful problems for people (thus there's no money or interest in them).
My suggestion would be to rethink what you think you know about being an entrepreneur, or creating products for consumption. How you gauge whether something will be useful for enough people, and why someone would pay for it. You need to get a lot better at filtering out what seem like cool ideas, but in fact are just toys that occupy (steal) your time.
I've made the same mistake you're making. It took me years to figure out what I was doing wrong. Building what seemed like one cool thing after another, and for some reason none of them were taking off.
Do one thing, make sure that thing is worth doing, and put all your focus behind it, unrelentingly for a long duration of time. Few things take off right away, even when they're great businesses, they will always test your will to stay in the fight. If you happen to find a great opportunity, and you hop around and don't put all your effort into it for an extended amount of time (even when things look grim), you'll never find out if it has a shot at success. The emphasis is: make sure what you're doing with your time is truly valuable ("is this the most valuable thing I can be doing with my time?" is a legitimate question to use as a filter).