Since you are doing ads, your description should reflect your ability to sell something to people in a few words. I dont think your description does that at the moment. Come up with a more engaging headline by adding flesh to I will be your social media manager. It is questionable, whether people search for that phrase on fiverr, too. Try to bring facebooks ads in the description. Make a gig for every management service you provide (facebook, instagram, tik-tok. etc.)