We acknowledge your query and apologize for the same. We request that you kindly visit the service center for a physical inspection of your device. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/
I faced exactly same issue after updating to android 13. Customer care and service center did not help. Finally I downgraded to android12. It is working fine now, but wifi is gone. Not able to use wifi and hotspot. At least it is not restarting continusly
