The prompt "Application Not Installed" is caused by deleting ApK file! ! ! An ApK program contains two files, one is ApK and the other is odeX. You only deleted ApK, not odeX, so there will be such a prompt! !
If you want to completely delete the software, use Re Manager, mount it as read and write after entering, then enter the system-app, delete two files of the software to be deleted, and then restart. ! ! !