How to Watch Youtube on Apple Tv
Connect your Apple device to the same Wi-Fi network as your Apple TV.
Open the YouTube app on your device and find the video that you want to stream on your Apple TV.
Tap the video to reveal the overlay, then tap the TV streaming icon
then tap the TV streaming icon. You'll find it in the top, right-hand corner of your screen. It’s the one that appears as a square with a Wi-Fi icon in the bottom, left-hand corner.
.Select AirPlay & Bluetooth Devices.
Find and select your Apple TV in the list that appears under Speakers & TVs. & TVs.