Improper firmware manipulation can permanently disable your phone.
Do you have the for a service center visit?
Reset your password via the Google recovery page.
Factory Reset Protection is a security feature on Android devices. It prevents unauthorized access after a factory reset.
Contact your service provider for identity verification and unlocking assistance. If you'd like to safely regain access to your device: Do you have access to the recovery email or phone number ? Is the device still linked to a Samsung Account ?