How do I get back deleted stored photos in iCloud ?

If you delete it from iCloud.com. Just go to your recently deleted to restore them. Below are the steps. If you deleted those. You may be able to retrieve them by restoring your device using an iCloud back up that was performed while you still had the photos

Hopefully this helps

Recover deleted photos or videos

If you accidentally delete a photo or video, you have 30 days to get it back from your Recently Deleted album. When you recover photos and videos, they go back to your All Photos album. Here's how to recover deleted photos or videos:

1. Open Photos and tap the Albums tab.
2. Tap the Recently Deleted album, then tap Select.
3. Tap the photo or video that you want to keep or tap Recover All.
4. Tap Recover again to confirm.

https://support.apple.com/kb/index?page=search&q=retrieve%20deleted%20photos&product=&doctype=&currentPage=1&includeArchived=false&locale=en_US&src=globalnav_support&type=organic