For people who have already launched a SaaS: If you had to start again with $0–$500 and build everything as a solo founder, what would you do differently? Would you: ●Validate the problem before writing any code? ●Find your first few potential customers before building? ●Build a very small MVP and launch quickly? ●Focus on one specific niche instead of a broader market? ●Spend more time on sales/marketing than development? I’m especially interested in what actually worked for getti...