If you hate getting spied on but still want to use your Android TV with internet, sideload NetGuard & in the settings make sure to let it show you system apps.

If you use CetusPlay / Zank to use your phone delete those, there is a better add free solution. All you need is this App on your phone: https://play.google.com/store/apps/details?id=svarzee.android.apps.adb_mouse

Enable Developer Options & ADB Debugging (in Dev Options)

If you don't know how to enable Dev Options, go to settings, then About and click "Build" till it confirms you are able to use this option. Make sure your TV is connected to the same network as your phone.

*If you know other useful apps, please let me know. *