Android 4.4.4 KitKat might be over a decade old, but millions of devices (from the Samsung Galaxy S4 to the Nexus 5 and various budget tablets) still run it perfectly. However, Google has officially stopped supporting KitKat with automatic updates. If you own a device running Android 4.4.4, you’ve likely seen the dreaded "Unfortunately, Google Play Store has stopped" message or "App not compatible."
The Play Store itself will feel faster if you use Nova Launcher (Android 4.4 compatible version) or Lawnchair Launcher v1. Heavy launchers slow down the entire OS. google play store apk android 44 4 best high quality
The Play Store is only the gateway; the real challenge is finding high-quality apps that still run on Android 4.4. The Ultimate Guide: Google Play Store APK for Android 4