Can't find 'Apps & Data screen > Move Data from Android' option in IPhone XS
The articles you posted are for freshly setting up an iPhone.

You have two solutions:

Transferring your contacts using an account 

You can send your contacts through WhatsApp or back them up using Google Cloud.

Set up again

You can return to the setup screen but this will erase all data. 

To do this go to Settings -> General -> Reset -> Erase all content and settings