I'm glad you also mentioned GIMP because that's the image editing program I use. It's great and free.

In my last comment I said I use MiniTool Power Data Recovery, but I now also use Recuva. Recuva is also free but allows you to recover unlimited data unlike other similar software.

I use MiniTool Power Data Recovery to scan files in old SD cards and drives. It does a great job at scanning files and it even scans years-old cached images. You can recover a few hundred megabytes of data for free before you have to pay an exorbitant monthly fee. And you can still perform scans after your data recovery limit is used up.