Check the Recently Deleted album in Photos
Open Photos
Tap Albums
Scroll to Recently Deleted
Select the photos
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
Restore from a computer backup
Connect iPhone to a Mac or PC
Open Finder or iTunes
Select the iPhone
Choose Restore Backup
Check iCloud Photos on another device
Open Photos on another iPhone, iPad, or Mac
Sign in with the same Apple ID
Look for the deleted photos
Check the Files app and other synced apps
Open Files
Check Downloads and app folders
Check Google Photos, OneDrive, Dropbox, or similar apps
Use a data recovery tool
Connect the iPhone to a computer
Use a trusted recovery app or service
Scan for deleted photos
Contact Apple Support
Ask about recovery options for your device and backup status