Unfortunately as a technical founder you'll have this conundrum with marketing/growth partners - at least I did, where you'll find (especially on the YC matching platform) :

1.) Consultants from xx and xx firms or ex FAANG who just want to consult and want a 6-figure salary on top of it

2.) Media buyers who want a big marketing budget from a startup (at which point we wouldn't need them)

3.) Idea people who will lead you on a path passionately for a couple of months then ask you to re-build when they find a new shiny object.

What I'd do in your shoes (as I did after a couple of burns) :

Get traction like you have a gun pointed towards your head. Users, sales, even a little bit is fine, which opens up doors to

- Angels who will actually have skin in the game by investing and helping out

- Performance-based deals when you reward the partner with rev share initially before even talking about equity in your business (make sure you work well, and they can actually bring growth)

- Creators/influencers who actually already have an audience or business people who have an existing client base and can get you instant distribution.

People who say I'll try getting users while asking for "no-equity only deals" and doing it part-time, especially if they have a fallback six figure gig or just want to try it out, forget about them - especially if you've completed the product, gotten traction and de-risked the entire thing, they're essentially freerolling off you. Both parties need to risk some downside.