Need advice for a start-up that’s pre-revenue building a marketplace platform (I will not promote)

Need help: I’m a founder raising for a pre-seed, pre-revenue startup. Live product, real users, engagement beating benchmarks. We’re a marketplace where the core behavior is new, so part of the raise funds building the habit itself, not just acquiring users into an existing one. The struggle: every “no” is “more traction.” But a new-behavior marketplace needs acquisition spend to hit critical mass before revenue, which is what the raise funds. Investors want the outcome the investment is supposed to produce