If your settings are "Friends" then only you can share the post and friends can read it. No one can share it. Change this setting with the icon next to the description to Public. It is now a shareable post.
Does making a Facebook post public make it shareable?
Under your Facebook profile name, there's a security button that you can click on. You can change it to: Public – so the post can be shared by anyone on or off of the Facebook site. Friends – so the post can be shared by anyone that you are friends with on Facebook.
How do I make a post public and shareable?
How to allow people to share your post on Facebook on a mobile device
- Find the post you want to make shareable and tap the three dots in the upper right corner. ...
- In the pop-up menu, tap "Edit Privacy." ...
- In the "Privacy" menu, tap the checkbox next to "Public," then tap "Done" in the upper right corner of the screen.
