Yeah but almost all business (when starting out) must make decisions based on assumptions. If you didn't you would never get everything done, double and triple checking every single thing. You have to trust your gut. The older I get the more I believe that.
I'm sorry to hear you were not successful, that REALLY sucks to spend all that time and not feel good about it.
It sounds like maybe you waited too long to attempt to sell anything? That's what MVPs are for, to give you feedback to see which of your early assumptions were correct. Ditch the incorrect ones, focus on the correct ones and get better at making assumptions and grow your business organically, based on a positive feedback loop.
I'm sorry to hear you were not successful, that REALLY sucks to spend all that time and not feel good about it.
It sounds like maybe you waited too long to attempt to sell anything? That's what MVPs are for, to give you feedback to see which of your early assumptions were correct. Ditch the incorrect ones, focus on the correct ones and get better at making assumptions and grow your business organically, based on a positive feedback loop.