Look at the frequency. If it’s under 1.2, then you know you have plenty of room before burning out meaning that you have a small budget relative to the audience size.
But don’t enlarge your audience just because you are seeking a low CPE (cost per engagement). Make sure you’re getting quality, too.
Do this by running remarketing audiences against people who have engaged with this ad. And now you are testing a sequence- one of many you can chain together to build a smart funnel.
Don’t get hung up on any one piece of content or one ad. See the bigger picture by having balancing metrics- usually quality vs quantity.

Dennis Yu
Dennis Yu is a former search engine engineer who has spent a billion dollars on Google and Facebook ads for Nike, Quiznos, Ashley Furniture, Red Bull, State Farm, and other organizations that have many locations.
He has achieved 25% of his goal of creating a million digital marketing jobs because of his partnership with universities, professional organizations, and agencies. Companies like GoDaddy, Fiverr, onlinejobs.ph, 7 Figure Agency, and Vendasta partner with him to create training and certifications.
Dennis created the Dollar a Day Strategy for local service businesses to enhance their existing local reputation and make the phone ring. He's coaching young adult agency owners who serve plumbers, AC technicians, landscapers, roofers, electricians in conjunction with leaders in these industries.
Mr. Yu believes that there should be a standard in measuring local marketing efforts, much like doctors and plumbers need to be certified and licensed. His Content Factory training and dashboards are used by thousands of practitioners.