I would like to re-open the original post
Because i'm facing the same issues, the cursor is not showing no matter what i try to make to. I also tried to enable USB debugging but it was useless, still not working
It would really help a lot for me, i can use the TV as a second screen to work on, since i'm without a PC right now.
To cast the whole screen right now i'm using the google Home app
I'm sorry to hear about that. You've mentioned previously that you've also tried using Miracast and other apps, but you get the same result. If that's the case, the issue could be with the phone or Bluetooth mouse that you're using. You can try other Bluetooth mouse or different mobile phone and try again.