Please suggest the best advice to get the first 100 paid users for a b2b SaaS

I’m running a B2B startup. Helps startups align their product decisions with user feedback to make sure you're building what your users need. We are currently focusing on getting our first 100 paid users. We’ve got a solid MVP and identified our target audience, but turning interested folks into paying customers is proving to be a challenge. Right now, I’m doing personalized outreach on LinkedIn and email, trying to show value upfront, but scaling this feels slow and exhausting. We are currently not considering running ads, as budgets are tight, and I want to make sure we get ROI. For those who’ve been through this stage, what strategies, tools, or approaches worked for you to land those critical first 100 users?