Magisk Manager is the tool that will help you manage Magisk on your Android device.
It will help you in managing root permissions for your phone and much more.
What is the use of the Magisk Manager?
If you want to grant/deny permission for any application .
this can be easily done with the help of Magisk Manager.
There are a ton of free modules available on Magisk Manager, from them you can download apps and games to your Android device.