Hi tnjms,
Thanks for contacting Apple Support Communities!
We understand that you need some help to customize photos on your Lock Screen, correct?
Are you able to choose photos manually? This resource will show you how to customize your Lock Screen with photos: Change the wallpaper on your iPhone - Apple Support
"Rotate multiple photos as your Lock Screen wallpaper
- In the Settings app, tap Wallpaper.
- Tap Add New Wallpaper.
- Select Photo Shuffle from the top row of options.
- On the Photo Shuffle screen, set a frequency (On Tap, On Lock, Hourly, or Daily). Then choose a set of photos that will shuffle as you use your iPhone throughout the day.

5. Tap Done."
If you're still unable to manually select your photos, feel free to reach out to Apple directly to investigate this further with you. You can reach them here: Contact Apple Support
Take care!