There are many Shortcuts that allow user to download photo/video from social apps but I didn't find any to download from private accounts.

I created this shortcut so that I could download from Private accounts or download private photo/video.

Instructions:

How Facebook and Instagram private accounts work is that both require 1. To be signed in into Safari 2. Following the private account to be able to view the private media.

Instagram: Just browser Instagram in Safari. Find a media, run the shortcut

Coming soon.. As for Facebook, Facebook app doesn’t allow you to copy private media link. Workaround is to browse for media in Safari. Open the post, run Shortcut.

Doesn't support Multiple photo download