Calendar will not sync from MacBook Pro to iPhone 12
My calendar will not sync from my MacBook Pro to my iPhone. If I enter an event in my calendar on my MacBook Pro, it does not show up in the calendar on my iPhone. If I enter an event on the calendar in my iPhone, it immediately shows up in my MacBook calendar. Why does it work in one direction but not the other? I have updated all my software on both the iPhone 12 (ios 15.2) and the 2017 15" MacBook Pro (Monterey OS 12.1) I have turned calendares and contacts on and off multiple times. I have re-started my computer and my iphone multiple times. Just not sure what to try next. Every time I call Apple, they start from scratch and most of the time I know much more about Apple products than the support technician I am talking with. Any help would be greatly appreciated!
MacBook Pro