Installing YouTube on an iPhone or iPad running iOS 12.5.7 can be tricky because the current version of the app requires iOS 14.0 or later. Since your device (likely an iPhone 5s, 6, or 6 Plus) cannot update further, you have to use a "legacy" download method.
Install YouTube:
Open the App Store: Go to the Updates tab (or tap your profile icon) and select Purchased. Search for YouTube: Locate YouTube in your history. Install Youtube Ios 12.5.7
Search for YouTube: Use the search bar to find YouTube in your list of previously downloaded apps. Install: Tap the cloud icon next to it. Installing YouTube on an iPhone or iPad running iOS 12
or another browser. You can add it to your Home Screen for easier access by tapping the Share button and selecting "Add to Home Screen." Jailbreak Solutions (Advanced) To access personalized content, sign in with your