Need to search any person on Facebook, so you can use Facebook image search feature. Here I am sharing the way to reverse image search on Facebook
, look at the below:
1. Choose the image and Right-click the image.
2. Open a new tab will showing possible matches for the picture
3. Remove the text from the search box, replace it with site:facebook.com, and tab Enter.
For more info - https://webfrenz.com/