I understand why it wouldn't start.here how to install unsigned apk with corepatch :
for non root phone :
for emulator :How to install unsigned APK using Core Patch module on VPhoneGaga
Source: How to install unsigned APK using Core Patch module (Root & Xposed required) - Platinmods.com - Android & iOS MODs, Mobile Games & Apps - VphoneGaga: How to use Root Apps on Nonrooted Devices that support Android 9,10,11,12,13 and 14 Devices - Platinmods.com - Android & iOS MODs, Mobile...platinmods.com
How to install unsigned APK using Core Patch module (Root & Xposed required)
Core Patch is a module for Xposed Framework to disable signature verification, directly modify the APK, and downgrade the App. What is difference between Core Patch and Lucky Patcher: - Lucky Patcher does not need Xposed, it's patching the system files directly. It does have Xposed way though...platinmods.com
I gave up because I couldn't figure out the "how to".
Thank you very much for your help.