Deleted video

Check your Recently Deleted album

1. In iOS 16, iPadOS 16.1, or later, use Face ID or Touch ID to unlock your Recently Deleted album.
2. Tap a photo or video, then tap Recover. To recover multiple photos, tap Select, select your photos or videos, then tap Recover.
3. Confirm that you want to recover the photos or videos.

If you're missing photos or videos in the Photos app

If you have a backup then you can restore from it. Hope you are aware of the restoring process which will wipe out everything on your device with that of the backup. 

If you are 100% sure that the backup that you are restoring has the data that you are looking for and are ready to wipe out your current data. Else take a current backup and archive it. Then restore.

How to create Multiple Backups for the same device.

1. On iTunes Click on Manage Backups
2. Right Click on a Backup and Click Archive
3. Click Backup Now.
4. You will see a fresh backup will get created See the GIF below