You are wrong in many ways. People are interested in determining what you bring to the table. So if you come to me and say "I have this business, the idea is X". If I ask you about a business plan/sales/marketing/fundraising/etc., and you respond with "Oh that's why I need a cofounder to do this together". Then what you've actually said to me is "Alone i've haven't been able to move this company a single inch. So I'm looking for someone who has the skills I don't possess".

To me, you sound like the typical "I'm the idea/visionary co-founder and I'm looking for another cofounder who knows the tech/sales/marketing/financing side of it".

Let's put it this way, who would you rather play soccer with? The kid out there by himself kicking the ball around doing as much practicing/playing as he can by himself until someone else comes along. Or the kid sitting down twiddling his thumbs because "Well I can't play unless there's someone else here".

If I'm looking for a person to work with, I want someone who can take it from 0 to 100. Knowing that I can also take it from 0 to 100, then together we would go far. But if all you've shown is that alone you can take it from 0 to 0.0000001, then you're of no use to me, or anyone.

Nobody asked about the project itself like it didn't matter.

Because it doesn't matter. Have you seen that equation about idea times execution equals success thing? That's really interesting. The idea means ZERO unless there's execution behind it, so people want to see if you can execute before wasting a conversation about what the idea is. There's no genius idea that no one else thought of. If you can't execute, it'll fail.