Site: operator - This directs your search to a specific website. To serach Facebook, you can use the site: operator in the following way
You can then follow the operator with phrases to include in your search query. Here are some examples to help you understand how this works. Let’s say you are looking for a content writer, then your search string will look like this:
Site:facebook.com “Content writer”
To refine the search to include only people and eliminate agencies or companies or posts, you can further add the phrase “profile photo” in the query. Though pages have profile pictures and cover photos, the phrase “profile photo” in the query ensures your results only list people.
Site:facebook.com “Content writer” “profile photo”