My experience with a lot of these platforms is that they usually contain deals that are already passed on by many other players (you can get lucky though). Its a grind, but I'd recommend building your own CRM and doing cold outreach and building a connection with the owners - convincing them why to sell to you instead of another buyer.

Found this post very insightful for this process: redacted

I think the most relevant ones have been covered above by others, but I also echo Sebastiaan (especially for some markets) - build your own CRM in parallell. I can also add a lens from the Nordics where you'll find some micro/mid deals through EY/KPMG etc.