Do you know what grabs your readers?
Go back and look for what FB posts get response. What makes them stickable? Simple quotes on background. Pictures that spark a response.
Lisa Tekhuerst. Susie Larson- seem too long. Toby Mac- almost always. The image, title or quotes leads them into the content.
Photos especially one’s with a quote.
Short posts with the ‘so what question answered’