You must specifically look for NewPipe Legacy , which was maintained to support Android 4.4.
Review the application permissions and tap at the bottom of the screen. Troubleshooting Common Errors on Android 4.4.2 Youtube Apk Download Android 4.4 2
Scroll down and tap on (or Lock Screen and Security on some devices). Look for the option labeled Unknown Sources . You must specifically look for NewPipe Legacy ,
For a safe download, stick with well-known, community-trusted websites. These platforms verify the APK files they host to ensure they are identical to the official ones from Google. stick with well-known