my apps won't open and my phone will not turn off or power off
i don't know what to do at this point.. i cannot get into any apps, and its looks like my phone turn off button will not work. i used it for siri and i worked perfectly fine, it just won't power off or even turn off. i do not know what is happening with my phone, and i have tried searching things up. nothing is working.. please help me resolve this issue, if not i will take it to apple store. thank you.
iPhone 11 Pro Max, iOS 14