YouTube on Android is not a standalone application; it is heavily dependent on Google Play Services (the background framework that handles authentication, location, and push notifications).
Uninstall all YouTube updates and install YouTube 17.32.38 (last version supporting Android 4.2.2). android 42 2 youtube not working updated
Procedure:
Following recent server-side changes by Google and mandatory updates to the YouTube Android client (version 18.x and above), devices running Android 4.2.2 can no longer run the latest YouTube app due to: YouTube on Android is not a standalone application;