Cause: The Play Store app itself is outdated.
Fix: Download the latest Google Play Store APK for Android 4.4.2 (version 38.x.x or last KitKat-compatible version) from APKMirror and install it.
MicroG is a FLOSS reimplementation of Google Play Services. It’s lightweight and works on Android 4.4.2. You lose some features (like some push notifications and SafetyNet), but core Google apps work. google play service apk android 442
You cannot simply download the first "Google Play Services APK" you find. Google releases hundreds of variants based on: Cause: The Play Store app itself is outdated