Youtube apk android jadul os 4 5 6 7 yang tidak support lagi makai ini tested oke https://github.com/sajibrgd/YouTube_WebApk/releases/download/Releases/app-universal-debug.apk
sumber https://xdaforums.com/t/youtube-webapk-for-android-5-android-6-and-android-7.4775541/