Go to Settings > Apps > YouTube. If it was pre-installed, you cannot fully uninstall it, but you can tap "Uninstall Updates." This will revert the app to the "factory" version (which could be from 2018 or 2019 depending on your phone).

: This is one of the most popular extensions for restoring a nostalgic design. It allows you to customize the number of thumbnails per row, restore the classic green/red like and dislike colors, and even use older fonts and logos. It is available on the Chrome Web Store Custom Tube

Users who hate the modern layout and "Shorts."

To use a physical older version of the YouTube app on Android, you must bypass the Google Play Store. Uninstall Updates : In your phone's Settings > Apps > YouTube

: If you go too old (e.g., a version from 2015), Google may have disabled the "handshake" between the app and the server. The app will open but show a "Connection Error."