Hello Heather, my name is Alexander. I'm an Independent Advisor and I'm happy to assist you!
Have you tried to open photos using the classic photo viewer app?
I recommend that you change the Appearance settings in the photos app:
Start the Photos app - click on the ellipses button - select Settings.
Under Appearance, change the Mode to Light.
You can also set it to ‘Use system settings’ in order to use the current Windows theme settings for your photos app.
You can also try to change the Windows theme and check the status of the issue.
Best regards,
Alexander B.