On iOS 12.5.7, the current YouTube app is officially unsupported as it requires iOS 16.0 or later. However, you can still access YouTube using one of the following methods. Method 1: The "Purchased" Section Workaround (No Jailbreak)
Without any of the above, any “paper” would be speculative or fictitious.
Options and steps
2. "Exclusive" features are usually fake or harmful
If a website or video tells you to install YouTube iOS 1257 Exclusive to get: