If you want to avoid jailbreaking and the app remains buggy, using the mobile browser is the most stable "exclusive" way to watch without restrictions.
Option A — Install the latest compatible YouTube app via “Purchased” (recommended if YouTube was previously downloaded with your Apple ID) install youtube ios 1257 exclusive
: Tap the Cloud icon (do not use the standard search page "GET" button). If you want to avoid jailbreaking and the
After installing the YouTube iOS 12.5.7 exclusive version: install youtube ios 1257 exclusive