By combining the stability of the last compatible YouTube version with the power of the YouTubeLegacy fix and the enhancements of a mod like uYou, you can build a YouTube experience on iOS 12.5.7 that is, in many ways, superior to the official modern app.
If you desperately want that classic feel, here is the only safe workflow: install youtube ios 1257 best
Clear out background applications. Double-click the Home button and swipe up on all other open apps to allocate maximum system memory to your video stream. If you want to optimize your device further, let me know: By combining the stability of the last compatible