Check the Google Photos Trash/Bin and restore the photos
Check your phone’s Gallery app Trash/Recently Deleted folder and restore the photos
Check Google Drive or any cloud backup app you use
Check Samsung Cloud, OneDrive, Xiaomi Cloud, or other device-specific backup services
Restore from a recent device backup if one exists
Use a file manager to look in DCIM, Pictures, or Download folders
Connect the phone to a computer and search for photo backups or cached copies
Use a trusted Android data recovery app
Stop using the phone immediately to avoid overwriting deleted photos
If the photos are very important, contact a professional data recovery service