If your installed version is completely broken, you can manually install the final YouTube APK builds that were designed for Lollipop using APKMirror. These versions, from around 2021, represent the last fully functional official YouTube experience on Android 5. Key version ranges include to v15.29.33 (mid-2020) and v16.38.39 (October 2021).
: Optimized for older hardware and includes data-saving features.
When we search for the "YouTube Android 5 version full," what exactly are we getting? The final builds for Lollipop offer a surprisingly robust experience, but missing some modern features.