I have a Blackview BV5300 Pro smartphone; I managed to root the phone to gain administrator privileges and now I want to change the default Blackview launcher which is called BvLauncher.

The main reason for using a different launcher is because BvLauncer has a bug preventing to disable the At a Glance widget. Another bug prevents the resizing of widgets, e.g. I cannot have a 3×3 Etar calendar widget or a 3×3 Termux:widget.

I suspect also that the Blackview launcher is somewhat a spyware, because the operating systems tries in any way to prevent you from disabling or replacing it with other launchers.