Cannot sign out of locked Apple ID on my iPhone

Hi, I need help recovering my Apple ID.

My little brother entered the wrong password several times on my iPhone SE (2nd generation), and now the new Apple ID I recently created is completely locked.

The recovery request was denied automatically.

I still have full access to my older Apple ID, but the phone is stuck on the new locked Apple ID, and I cannot sign out or activate the device.

The iPhone SE2 is physically with me and I can provide the serial number privately to an Apple advisor if needed.

Is there any way to request manual identity verification or get Apple Support to unlock this Apple ID?

Thank you.