hardware issue

I recently updated my iPhone 14 pro max to the iOS 18 and suddenly the phone just started shutting off then back on. I did a reset to see if that would solve the issue and it didn't. I went to the apple store to check it and lets just say I was told I now have a hardware issue and its going to cost 550 to fix. The phone is pretty new I only had it for 1yr 5mon so it no longer has warranty. Its so upsetting! I think they definitely should offer a longer warrenty for hardware issues because that is something that is not fault of our own. Apple do better these phones are not cheap.