You need a legacy build of Vanced that was compiled specifically for older Android architectures. These are usually based on older YouTube versions (approx v14.x or older).
Step 1: Install MicroG first
Step 2: Install YouTube Vanced 14.21.54
Step 3: Login via MicroG
Step 4: Configure Vanced Settings
Even with the correct android 4.4.2 youtube vanced apk, you may face issues. Here is how to resolve them:
Attempting to run Vanced on Android 4.4.2 carries elevated risks: android 4.4.2 youtube vanced apk
If you still wish to try:
Install order:
Expected result: Account login will fail (or if it works briefly, video playback will error).