YouTube will now appear there. Tap the cloud icon to install the older, compatible version. The Safari Web App Workaround
A pop-up will appear stating that the current version requires iOS 14 or later. It will ask if you want to download the last compatible version. Tap Download. The Secondary Device Method Install Youtube Ios 12.5.7
If you have never downloaded YouTube on your Apple ID, the app won't appear in your "Purchased" list. You can fix this by using a newer device. Borrow a newer iPhone or iPad running iOS 14, 15, or 16. Sign in to your Apple ID on that newer device. Download the YouTube app from the App Store. YouTube will now appear there
Avoid third-party "IPAs" or unofficial app stores. These often contain adware or can compromise your Google account security. Stick to the official App Store "Purchased" method or the Safari shortcut to keep your data safe. It will ask if you want to download