Check the Recently Deleted album in the Photos app
Open Photos
Tap Albums
Open Recently Deleted
Select the videos
Tap Recover
Restore from an iCloud backup
Go to Settings
Tap General
Tap Transfer or Reset iPhone
Tap Erase All Content and Settings
Set up the iPhone again
Choose Restore from iCloud Backup during setup
Restore from a computer backup
Connect the iPhone to a Mac or PC
Open Finder on Mac or iTunes on Windows or older macOS
Select the iPhone
Choose Restore Backup
Pick a backup that contains the deleted videos
Check the Photos app on other Apple devices
Open Photos on your iPad, Mac, or another iPhone
Look in Recently Deleted
Recover the videos if they are still there
Check cloud storage apps
Open Google Photos, OneDrive, Dropbox, or similar apps
Look in trash or deleted items
Restore the videos if available
Contact Apple Support
Ask about recovery options if the videos were synced with iCloud Photos
Use a third-party iPhone data recovery tool
Scan the device or backup
Recover videos if the tool finds them
Stop using the iPhone as soon as possible
Avoid creating new data that may overwrite deleted videos