Have you reported the issue to Apple via feedback? If not, please do.
Have you tried doing any troubleshooting steps to see if the issue is resolved? Force restarting the device is something to try. It may not help but you won’t know until you try.
- Press and quickly release the volume up button.
- Press and quickly release the volume down button.
- Press and hold the side button.
- When the Apple logo appears, release the side button.
Have you made sure any new updates for apps has been done just in case any apps on older versions aren’t contributing to the issue? Again, it may not resolve the issue but it’s still worth doing just to be sure.
Have you checked settings just to be sure everything is as it should be and to make sure any new options that may have come with the new iOS update are setup in the best way for your needs?
If you feel like you have done everything possible on your end and nothing helps contact Apple directly so they can check it out and run diagnostics