iPhone calendar cannot sync with Windows 10 Outlook 2021
I want my Windows 10 desktop to sync its Outlook 2021 calendar with my iPhone XR's calendar app.
I do not have Office 365. Hence I cannot use the Outlook app on the phone. It's installed, but has nothing in it, as I don't have Office 365. I have a stand-alone instance of Office 2021.
I am not using iCloud (I used to, but have removed all data and syncing everything with it).
I do not have any Google connector for Outlook.
iTunes says my contacts and calendars are being synced with Microsoft Exchange over the air - I don't have an Exchange account anywhere. My email is hosted on my own domain and email is the only service I use there - no calendars or contacts.
I have read many discussions of this going back several years, but the mix of products and settings were slightly different than mine. I simply want the option to replace information on my iPhone with that from my Windows Outlook calendar, contacts and notes.
iPhone XR, iOS 16