Take the SD card out of the phone and plug it into your PC with a card reader. Then run a card‐based recovery tool like Recuva (Windows) or PhotoRec (cross-platform) to scan for deleted JPG/PNG files. Since you’re not rooting, you’re limited to the removable storage—but these utilities do a pretty solid job pulling lost pics off an SD card.
Android’s big headache is that most “deep” undelete tools insist on root access and results vary wildly across phones. Fragmentation also means you’ll get lucky on some models and nothing on others.
On iPhone you don’t face this: every photo lives in “Recently Deleted” for 30 days, iCloud Photos keeps automatic backups, and you can restore lost shots with a couple taps—no root, no card reader, no sweat.