Sometimes you must revert to the factory version of Play Services before the system will allow a manual install of 13.2.78.
August 28, 2018 PDT. Android 8.0+ 320dpi. 13.2.78 (090408-210410490) APK 3891. 13278030. August 28, 2018 PDT. Android 8.0+ 480dpi. google play services 13278 ultima version
This specific build was often sought after to fix "Google Play Services battery drain" issues reported in earlier 12.x versions. Why Users Search for This Specific Version Sometimes you must revert to the factory version