On your iOS 12 device, navigate to (or Device Management ).
Older Apple devices like the iPhone 5s, iPhone 6, iPad Air, and iPad Mini 2 are locked out of modern app updates. Because iOS 12 is the final major software update these devices can receive, downloading the standard YouTube app from the official App Store often results in error messages, missing features, or complete app crashes.
This means that exactly one week after installing your patched YouTube app, it will crash upon opening. To prevent this, you must plug your device back into your computer once a week and run the Sideloadly process again, or refresh it over the same Wi-Fi network using AltStore.
Disclaimer: Sideloading patched apps can violate YouTube's Terms of Service. Always use reputable sources to avoid malware.
Download onto your computer and enable the Mail Plug-in (Mac) or install required iCloud/iTunes drivers (Windows).