Hello CharityD235,
The steps below can help with missing photos or videos:
- Check your Recently Deleted album
- Unhide your photos
- Make sure that iCloud Photos is turned on
- Check your iCloud Shared Photo Library
- Sign in with the same Apple ID
You can find more details on each of those steps in this resource: If you're missing photos or videos in the Photos app - Apple Support
If you still aren't able to locate your photos or videos, do you have any existing backups available? This resource covers how to check on that: Locate backups of your iPhone, iPad, and iPod touch - Apple Support
Let us know, and we'll keep moving forward based on those details.