I have a problem - who can I help?

Outlook 2021 crashes after installing iCloud Calendar?
(Using the iCloud app from the Windows Store)
I Work With Windows 11

My email account is pop. With Outlook 2013 it works fine on my old computer

I need to delete the iCloud add-in - then Outlook 2021 will work again

But I don't have a calendar like that

Who can help?

Thanks very much