If you build it, they won't necessarily come; as you're seeing now. I think you need to stop development. Don't put another minute into dev work until you've found someone to pay for this. Sometimes it's helpful and motivating to approach the first few sales in a completely non sustainable way. Don't try to establish a customer acquisition funnel - try to find one single person willing to pay. It sounds like your Dec…
It cost me a $200,000 investment to learn this lesson - the longer you spend building something without convincing someone to open their wallet the more risk that you could be building something nobody wants.
Once I emotionally recovered from that failure, my next project started with a very tiny goal: earn $150 within two weeks on a new idea to afford motorcycle Insurance.
My approach meant that I spent literally all my time on marketing, and developed the product I was selling specifically for my first customer. That also means the scope was super small.
The experiment was a big success, and over the next two years I had trained 5 contractors to keep the machine running while I focused on finding people who wanted to pay someone to solve their problem.
I couldn't have been comfortable trying to sell the absolute bare minimum product as fast as possible without being very familiar with the pain of spending years on a product that nobody wanted.
Either you start getting excited about learning how to sell it, or you start looking for one of those people.