After I end my FaceTime calls, my iPhone freezes

Im not sure if anyone is having the same issue, only started occurring after the IOS update on my Iphone 11 Pro max. Often times, after i end my facetime calls, my phone freezes. I am unable to open apps, close my phone, restart or turn off. Anyone know how to fix? Other times this occurred, i was already low on battery and just waited for it to die.

[Re-Titled by Moderator]