Any advice/guides on how to find your first customers for a B2B SaaS startup?

Some of the things we are trying: - Built an MVP (https://TrendLab.io) - Launched on PH (https://www.producthunt.com/posts/trendlab) - Participated in small FB Communities - Reach out to relevant people on LinkedIn (best performer) Our target companies: - Multibrands companies - e-commerce and dropshipping business - Digital Marketing agencies - Growth and analytics teams (Senior marketing roles and founders) Our product: - Trend Discovery tool (Niche and fast-growing topics, products, and companies) - Market Intelligence and Customers Insights (understand better your market, get competitive advantages and get to know who are your customers) - Weekly newsletter What other strategies do you recommend?