Admin audit app for monitoring user activity

Nextcloud version (eg, 15.0.4):
Operating system and version (eg, Ubuntu 18.04):
PHP version (eg, 7.2):

The issue you are facing:
We are unable to trace user activity/logging that at what time which user has done what.
something like A ctivity Logg App used in Nextcloud 11 or before, but just for admin.
We require a nextcloud application which helps just the admin to monitor user activities.

Is this the first time you’ve seen this error? (Y/N):Y