Facebook has an option called "Audience Insights". It is a very useful tool for understanding your target market. You can use this tool without setting up conversion tracking or retargeting, which are things that I recommend though because they increase ROI and decrease wasted ad spend. The best part about it is that all you need to do is look at your Page Insights and then just go to "Audience" on the left-hand navigation of your Facebook Ads Manager, and then click on "Insights". If your Facebook audience insights not working, Follow the tricks below.