facebook sharing cache?

Question

PHP

Hello! Please tell me, is it really possible for a user to fumble through Facebook with a picture that he himself uploaded to the site, that is, to display a variable in a meta tag? HOW can you do this sharing?
I haven't been able to do this for two days now! The problem is that the Facebook cache itself is not cleared, you have to do it through their service.
I would be very grateful for your help!