Hi Friends! Please Share Your view to get more leads through facebook (without using paid advertising).
You can use Facebook ads to target more customers of your niche. When your customer like your services they may share it over facebook. Caution: Negative reviews get more popular and irritated client may submit more on facebook. Even if you have more satisfied users.
try to target your keyword through facebook ads so user who looking for service who find you through ads.
Since you don't want a paid advertising, you have to put effort and hard work in sharing your posts. You can join groups related to your niche. Find your target audience and build connections with them. Include creative visuals for your posts that will entice prospects.
Simple: Compelling content. But you're also going to have to work hard to capture and convert those leads.