My calendar
When I clic on my calendar icon a whole lot of items pertaining to work,home,email address etc come onto the screen and I can’t get into my calendar.
iPhone 11, iOS 14
Are you seeing something as shown in pic below?
Then probably you have accepted an offer or subscribed for a spam Calendar accidentally. Watch the GIF below to know how to unsubscribe from these alerts. Look for an unknown Calendar on the device under subscribed calendars.