If you install Play Services and it still refuses to work, your might be outdated. This is a system app located in /system/priv-app/ . Modifying this usually requires Root access, so manual flashing is generally not recommended for casual users.
Before opening, verify the filename includes:
Google Play Services is a system app that enables Google apps, such as Google Maps, Google Drive, and Google Play Store, to function properly on Android devices. It provides a range of services, including:
Below is a deep, technical report covering the essentials.