iPhone Touch Screen not working- after IOS 18 UPDATE

I recently updated my iPhone 14 Pro Max to iOS 18, just a few hours after its release (10:30 pm, September 17). The software update seemed to be working fine overnight as I customized various settings. However, the next morning (September 18, approximately 9:02 am), my screen froze, and the touch functionality stopped working. Interestingly, all other features remained functional, including receiving calls, DMs, notifications, Find My alerts from my Apple watch.. etc. The volume buttons worked as usual, but I couldn't unlock my device or get the touch screen to respond.

I attempted to update as well as update&restore my iPhone through iTunes, even sacrificing my data, but still had no luck. Please help me resolve this issue; it's extremely frustrating and disappointing