Banks have big advertising budgets, and their ads get lots of engagement. Follow all lenders, and then contact those that have commented directly if they've expressed interest of any kind. It's surprisingly effective. You're exposed to a 'buy now' market, and you're not paying for it. It just works.
Once you have somebody on staff, have them perform the function for just 20 minutes twice a day. If you're one of our clients, talk to us about how we aggregate comments and then send AI messages.
When a user comments on your own ads, ensure you hide that comment to limit exposure.
There's obvious ethical issues with what I've described, but one could argue that you have a vocational responsibility to offer help when you see somebody that needs it. Contacting those that comment on other brokers ads is where it starts to get dodgy.