No GPS Exif data on iPhone XS
Can you try to check EXIF Data on iPhone using Third party apps like
EXIF Viewer by Fluntro or any other EXIF Apps you can get for free on Appstore.

Chances are high that, EXIF informations are stripped while you transferred photo from iPhone to Windows. Normally, iPhone to Mac photo transfer over airdrop doesn't strip EXIF Metadata. But since I am not sure how you transferred photos to Windows Machine, I can't comment

Attaching screenshot with EXIF of photo took on iPhone XS Max, Apple's Camera app does record EXIF details including Camera Model, Aperture, Shutter Speed, ISO etc.



Disclaimer: I have developed the EXIF Viewer by Fluntro App