To watch something on YouTube, you need to download and install the YouTube app on your device, it can be any smart TV, android TV, PlayStation, or Xbox where you just need to log in to your account and start streaming videos, etc.Reasons to Sign out of You Tube
There can be certain reasons why someone wants to sign out of a YouTube account
Follow the following steps:
Google Account > left navigation panel, Tap Security > your device’s panel, click Manage all devices > Sign out.
For signing out of TV
Go to your TV apps.
Here is that link
https://myaccount.google.com/permissions
Finally, PlayStation is signed out from your YouTube account.
1. Browse this link on any of your devices
2. Third–party apps list will display.
3. Select Xbox network
4. Remove Access
Finally, Xbox is signed out from your YouTube account
1. Browse this link on any of your devices.
3. Select the Android TV app
Finally, the Android TV app is signed out from your YouTube account.