Open Facebook and sign in before clicking the small downward-pointing arrow in the top-right corner.
A drop-down menu will appear; select “Settings and Privacy” from there.
Once more, select “Settings” from the menu on the left and select the “Privacy” tab.
There will be a choice for “Who can see your future posts” under “Your activity” in the menu.
Switch the configuration to private or public as per your need.
Read More:- https://ityug247.com/how-to-make-a-post-shareable-on-facebook/