Tried this and still the app cant be installed. These were the steps I did, please tell me if I am lacking anything:
-Installed Nox android 9 64bit, allowed root-reboot.
-Installed Magisk Delta, Direct install to system partition-reboot.
-Open Magisk Delta, toggle Zygisk-reboot.
-Open Magisk Delta, modules, installed LSposed-Zygisk- reboot.
-Installed LSposed from google play-reboot.
-Installed CorePatch-reboot.
-Open LSposed, modules, corepatch, enable module, toggle system framework and toggle all in your screenshot -reboot.
-Install unsigned apk - App not installed.