When you’re searching for just people on Facebook, select People at the top to avoid finding business pages, events, and other content.; Use the filters off to the left to make the results more relevant. For example, find old classmates on Facebook using their name and the Education filter (choose your school), or pick a business you’ve worked for from Work to find coworkers with that name.

https://www.lifewire.com/ways-you-can-use-facebook-to-find-people-online-3482276