Annette Campagne musique facebook page clean up

I am a singer songwriter with a facebook page that I don't really use anymore because my reach is very bad. I would like someone to help me remove people who are not engaging in my posts. I have 19K likes, and would need to clean this up. I would like to hire someone to do this, or show me how to do it myself.
My website is www.annettecampagne.com