You can apply various privacy settings to each post you share. There are four privacy settings available for each post:
Public: Visible to every registered user
Friends: Visible to only users who follow you
Anonymous: Visible to every registered user, but your account details will be hidden
Private: Visible to only you
To change privacy settings before completing a post:
Blocking users disables them from viewing your posts, account, comments, or likes. To block a user:
How to unblock a user;