Contacts
How do you Export iPhone Contacts to Excel or CSV
iPhone 11
There is no direct method available on the iPhone to export your contacts. If you have a Mac that is logged in with the same Apple ID as your iPhone then you can export your contacts from the Mac to a .CSV or an Excel file. If you do not have a Mac, then you can perform a Google search on the internet and you will find many available solutions to your question including an app that is available in the App Store.
Axel F.