That certainly makes things harder. It depends on the extent and type of data corruption. But a scan using one of the free trial versions might reveal that at least some (but perhaps not all) files can be recovered. It's definitely worth a try. In general, the same process applies: stop using the SD card, try running one of the recovery apps to see if it can recover pictures, and, if it can, restore the deleted files. But before you do that, try fixing the corruption with your computer operating system's built-in tools. On Windows, it's CHKDSK. On macOS, it's First Aid. These are your best bets for fixing a corrupted SD card. You can then proceed with the scan and data recovery process.