Restoring locked iPhone 15 Pro Max with Apple Care after finding it

I missed my iphone 15 pro max, which was reported to AIG, as this mobile had APPLE CARE full facilities. Later I got replacement. Just few days back, I found my missing mobile, which is already deleted and also locked to my Icloud. I tried to restore through ITune and it did restored, but at the end it still locked to my Icloud. I cannot loged in to this mobile, as it show a message that ---- this mobile is reported lost or stolen. if found, please visit https://support.apple.com/found for further instruction.

I read all instructions and contacted Apple Support and got some instruction to activate my mobile, whereas as it is still does not goes on.

Please help

[Edited by Moderator]