Instagram: How to keep your Posts private?

Your profile photo and posts in the image-driven app, by default, can be seen by everyone. In the privacy settings, you have the option to make it visible only to approved followers.

• Go to your ‘Account profile’
• Open the ‘Edit Your Profile’
• Turn ON the Option ‘Posts Are Private’

This keeps your photos/posts only visible to your approved followers and no longer available to public.