Android 4.4.2 corresponds to API Level 19 . Around 2021–2023, Google significantly reduced support for API levels below 21 (Android 5.0 Lollipop). The last stable versions of Google Play Services that support KitKat are from the 21.x.x and 22.x.x families (specifically variants ending in -034 or -074 depending on your CPU).
Unlike a standard app, Google Play Services is a background service and API library that connects your old Android OS to Google's modern servers. It handles authentication, location services, push notifications (GCM/FCM), and security updates. Almost every Google app (YouTube, Maps, Gmail) and thousands of third-party apps depend on it. google play services apk download for android 4.4.2 kitkat