how do I see the photos that I have taken with my iPhone on my Mac

Are you using iCloud Photos on the iPhone? Then you should be able to see your iPhone photos in the Photos.app on your Mac, if you enable iCloud Photos on the Mac as well.

Or connect the iHone to a USB port of the Mac and download the photos from the iPhone onto your Mac, either with Image Capture or the Photos.app.

If they are already in Photos, you can create a smart album and set the camera to your iPhone.