Can’t see shared locations in Find My after iPhone reset

I recently did a reset for my phone and I restored my data from a backup I had 2 days ago, everything seems fine for the most part, its just that I can't see my friends & families locations of course. Is there any way to fix it? I do own a MacBook & watch if that matters.

[Re-Titled by Moderator]

Original Title: No location found in Find My?