If you're looking for a fast and affordable solution, I recommend using web and social media monitoring tools. Search for your competitors’ names and the keywords your potential customers might use to address the problem your SaaS is designed to solve.

This approach allows you to discover real-time conversations or questions your target audience is asking, giving you the opportunity to join those discussions and promote your SaaS directly.

There are many listening tools available, but I suggest trying Mentionmind https://mentionmind.com , because it offers unlimited keywords and topics for monitoring.