Not finding first customers - feeling stuck

I'm feeling stuck with my minimal SaaS product (https://suppliersecurity.info).

The leads I had either built a similar tool in-house or told me they are not interested "at the moment". I got these leads by contacting many people on LinkedIn and having deeper discussions with 5 companies.

The fact that they won't buy or tell me what additional features they would need to buy, tells me either the product is not there yet or the problem is just not big enough.

To be honest, I feel a bit deflated and don't really know which steps to take next. Suggestions very welcome!

BACKGROUND

Suppliersecurity.info provides up-to-date security and compliance data on companies and is meant to be plugged into a security vendor management tool.

The term security vendor management is a synonym for "Companies tracking where their data is and how securely it is protected". They do this for security and legal reasons. Certifications like ISO27001 and SOC2 are often requiring this.

The product itself is something I wanted when I was a CISO, as I had to do this research myself.

I built the prototype, to be able to show prospective customers something. There are of course many things wrong with the website/app itself, which is why I did conf calls with demo's and cold reach out.