Check the Google Photos Trash/Recycle Bin
Check the Gallery app’s Trash/Recently Deleted folder
Check your phone’s File Manager for a Deleted/Recycle Bin folder
Restore from a cloud backup such as Google Drive, Samsung Cloud, or OneDrive
Restore from an SD card backup if the photos were stored there
Connect the phone to a computer and use recovery software
Use a data recovery app from the Google Play Store
Stop using the phone immediately to avoid overwriting deleted photos
Check messaging apps and social media apps for shared copies
Ask your carrier or device manufacturer support for backup options