On Facebook about half of users are actively daily according to https://zephoria.com/top-15-valuable-facebook-statistics/. What counts as "active" could be background data on a mobile app or messenger activity or having a homepage set as Facebook or having the share button clicked on another website.
Good point to focus on active users!
Roger that :)
The exact number of active users (and other interesting values) can be found in my daily stats.