Google officially dropped support for Android 4.4 KitKat in July 2023, meaning devices on this version, including those with Android 4.4.4, no longer receive security updates or functional Google Play Services. While older, legacy Play Services APKs can be sideloaded, they are unlikely to function with modern apps or sign-in services, leaving the device largely inoperable for contemporary use. For more details, visit Google Support
If unsure, download the “nodpi” universal variant. It works on all screen densities but may use slightly more RAM. android 444 google play services apk work
This is the most critical requirement. MicroG needs to be able to impersonate official Google services, which requires a "Signature Spoofing" patch applied to the operating system. Alternatively, you can use a ROM with microG preinstalled, such as LineageOS for microG Google officially dropped support for Android 4