I own a 2016.5 Mazda CX-5 - without an active navigation capability.
I also own an iPhone 14 with navigation apps like Maps and Google Maps. I plan to drive many hours in the next two days to new places. I would like to view my (small) iPhone navigation screen on the (larger) CX-5 screen. Is it possible. How? Thank you for any help.

 

You need Carplay to do that. Don't think it's possible on your year of CX-5

 

That option is available for the 2016.
You can retrofit but it's actually way cheaper to buy a standalone low-end GPS unit,or find a used one.
I keep my old Garmin and maps in my 2020 for back-up.