: Tap the Cloud icon (download icon) next to the app. A prompt will appear asking if you want to "Download an older version of this application" .
If your iPhone is on iOS 14.0 – 15.4.1, you can use (permanent install, no 7-day limit). install youtube ios 1257 best
Ipad mini 2, ios 12.5.7 -- Can no longer update or use YouTube : Tap the Cloud icon (download icon) next to the app