is it possible to create a simple dummy apk to replace an app that causes trouble?

is it possible to create a simple dummy apk to replace an app that causes trouble? The apk would just do nothing. my goal is to prevent the unnecessary app from bloating the small ram j7 has. The app to be replaced is: google play services (i dont care losing its functionalities...), because on j7 we cant: disable it, uninstall it, not even using adb shell as it says permission denied or the app is device admin (there is no command to remove admin from app thru adb shell on dpm help)... rooting is not an option. It will force a bootloader unlocked that will prevent netflix working properly. so my last hope is ask them to let I didable or uninstall it (already lost this hope just after thinking it), or find another workaround to solve the ram bloating problem. so i thought that one way could be to dummify these problematic apps. And uninstall everything that depends on it too of course. But is it possible? How can it be done?