In my experience, you may be having trouble finding some excited about your specific idea. One way to proceed would be to get started as best you can, and set aside a big chunk of the company. When you have a little bit of traction, and someone can see it, it’s easier for them to see the company as viable. A friend of mine raised a Series A and later recruited a founding developer who got like 30% or 40% of the company. When I founded my company & was fortunate to find someone of cofounder caliber who was looking for a regular job, I hired them & soon have them 40% of the company and made them my cofounder. In my case, they weren’t passionate about my idea because they didn’t really get it at first, but that changed after working together.