Since Android 4.4 is an older operating system, modern versions of the Play Store are no longer compatible with it. You must install a legacy version.
Google Services Framework: The backbone that allows Google apps to communicate with servers. Google Account Manager: Handles login and authentication.
If your device doesn't have the Play Store, or the current one is broken, follow these steps to manually install it: Enable Unknown Sources Settings > Security (or Privacy) and toggle on Unknown Sources to allow installations from outside the Play Store. Download the File
Here’s a clear, honest review based on that request: