iPhone 13 pro max calendar freezes

Welcome to the Apple Support Communities, Jayman44.

We understand that the Calendar app freezes on your iPhone, so we'd like to share a resource with you. Start by going over the steps outlined in this article, including making sure you're running the latest version of iOS software: If an app on your iPhone or iPad stops responding, closes unexpectedly, or won’t open.

If the issue persists reply with the answers to these questions:

• Do you notice this behavior when doing something specific within the app? For example, does it happen when adding an event, sending an invite, or at another time?
• Does this happen with any other apps?

Best regards.

It freezes when using calendar, mostly when scrolling thru to look at calendar, not usually when making a calendar appointment. Any help?