Many such services are available online, but again, they only work based on the privacy settings of the user you’re trying to locate.
However, if you’re a business owner and serious about doing in-depth research before hiring, you can also subscribe to the likes of Mentionytics ( website) and Social Mention ( website). Some of the most popular free ones include Social Searcher ( website) and snitch.name ( website), both of which help you search Facebook without an account. Social search engines use algorithms to specifically sift through the vast array of information about individuals on social media. Unlike personal accounts, business accounts will generally be visible on public search results. What’s more, users can also restrict visibility from other Facebook users who are not on their friends list. They can either make their profile available to search or hide it from search engines.
That is an option every Facebook account holder has.
Do note that the search engine will only list profiles under that name as long as those users have not set their personal privacy controls to restrict visibility.