The result depends on the options you have set.
"Enhance per Channel Contrast" yields the near-monochrome image you show.
I normally set "Find Dark and Light Colours, and "Snap Neutral midtones."
That's good to know.
If all else fails, (hopefully never!) we could use Apple Keynote to a presentation. I know that PTE is superior by a mile, but sometimes it's good to have a fallback scheme.
On opening my last project the slide list thumbnails are greyed out and the spinning beachball of death runs for ever! I can only escape by using Force Quit.
Mac Ventura 13.4.1
PTE 11.0.6
Could you be more specific about the location if these files? This looks like a Mac filing system so is your illustration a screen shot of something in Finder or in PTE AV Studio?
In Photos, select the images (must be in acceptable format, e.g. JPG) and go to File>Export and put them in a folder in your PTE Projects folder (assuming you have made one!)