Here are the steps that you have to follow to set up Android TV with your android mobile.
On your Android TV, go to the Home screen.
Look down to the "Applications" line.
Select the Live Channels application.
Press the Select button.
Under "television Options," select Channel arrangement
Pick which channels you need to appear in your program guide.
To get back to your Live Channels stream, press the Back button.
For more visit:
https://weblyen.hashnode.dev/simple-steps-to-setup-android-tv
https://riich.me/blogs/view/17295/how-to-set-up-an-android-tv-using-an-android-phone
https://www.atoallinks.com/2021/how-do-i-setup-my-android-tv