Since the official app is effectively dead on Android 5.1.1, the best way to watch YouTube is through third-party apps designed to work on older APIs. 1. NewPipe
If you attempt to launch an older, previously installed version of the official YouTube app on Android 5.1.1, you will typically encounter one of the following roadblocks: app youtube android 5.1.1
Note: This method is a temporary workaround. If the server-side API changes entirely, spoofing your system version will no longer work. Method 2: Lightweight Alternative Clients (No Root) Since the official app is effectively dead on Android 5
