iPhones are just like any other phones dnt be fooled, once ****** cannot be traced not blacklisted

My iPhone 13 pro max was ****** 21st March 2022 around 19h30 and when I tried to locate it around 19h45, it was switched off and I couldn't locate it. I then log into laptop using my apple ID only to find that they have changed my apple ID of which the apple product proud itself with, that apple ID is for only one device, a device can never have 2 apple ID but to may dismay my apple ID have been bypassed and manipulated. My device cannot be traced nor blacklisted as istore dnt blacklist nor have any system in place to blacklist a device but only relay on the network provider. Why spend so much on a device which you are told is sophisticated and safe when in actual fact its same as any other product?