Google Stadia has figured out a way to ditch the fancy gamepad for TV play - The Verge
How to use your phone as Gamepad for Android TV - YouTube
Amazon.com: UNIHOW Controller for PC/Laptop/Android/TV/Tesla/Steam/Switch,PC Controller with Backbone/Trigger Keys, Dual-Vibration Joystick Gamepad Computer Bluetooth Controller with 2.4G Adapter : Video Games
EvoFox Elite Ops Wireless Gamepad Review: Best Gaming Controller For PC & Android TV - Techsable
How to Pair a Game Controller to Google TV or Android TV