Sound Won’t Turn Off on Instagram Stories: How to Fix?
Instagram users are also angry because Sound does not switch off on Instagram Stories
Here's how to resolve the issue on Android and iPhone devices
Simply tap the sound icon in the app or dial down the volume on your smartphone
If you have an iPhone, you must turn the switch on the side of the phone.
Meta has not disclosed its plans to remove the "Mute" or "Silent Mode" option from Stories, which would be incredibly nonsensical.
This error is most likely the result of a bug in the most recent Instagram upgrade.
There is no solution available at the time of writing.
You can try restarting your smartphone, updating the Instagram app, deleting the app cache, and reinstalling the app as general remedies
The best option is to wait till Instagram and Meta provide a fix.
How to delete or Merge Duplicate Contacts on iPhone