I'm a serial startup founder and LOVE working with other founders or former founders. They often come with a level of maturity that few managers have -- they know how hard it is to run a business, to raise money, hire/fire, etc... This is especially true in your case, where you built something that got some traction.

I would say there are TWO problems you have right now.

1. Recruiters are not the people you want to reach out to. Reach out to the entrepreneurs who are running the businesses you want to work for... This implies that you might have luck with scaleups/startups or founder-led companies... The important piece is: recruiters will rarely have the appreciation for your experiences that other founders do, and most companies don't explicitly seek out ex-founders... So you'll resonate with the founders but NOT with a recruiter who has a checklist of skills.

2. Make sure your "about me" section in your resume outlines the difficulties of starting and scaling a business, and why you are so unique... Good executive recruiters know that special people struggle putting their experiences into a cohesive checklist, but then your "about me" section needs to be really compelling.