I think the problem is your mindset. While you're coming up with reasons why you can't succeed, I know hundreds of people who are actually building things that are successful. I mean TypingMind.com is literally just a GPT wrapper built and maintained by a single guy, and it makes hundreds of thousands of dollars per month.
If I told you I dropped a million dollars in the Pacific Ocean, would you look for it? No. What if I buried it somewhere in California, would you search for it then? Still no. What if I told you it was somewhere in your home, would you search? Yes, and you would probably tear your house apart.
If you want to succeed you have to try, and it only makes sense to try if you believe that things are possible. It all starts there.