Google Play Services is the "engine" behind your apps. Without it, you can't log into your Google Account, use Maps, or even download new apps from the Play Store. Since updates are no longer pushed automatically to KitKat, you must manually sideload the final compatible version to maintain as much functionality as possible. The Final Compatible Version

Look for versions released in late 2021 or early 2022. These are the last stable builds that will run on KitKat. Installation Steps

The last version of Google Play Services that works on Android 4.4.2 is 23.30.13 (or variants ending in .99).

Because official support has ended, you cannot usually update through the Play Store. You must manually download and install the APK file .