Testdisk is essentially about partitions/volumes. Photorec is about files only. They are both vey good at what they are supposed to do, but in your case Testd

Testdisk is essentially about partitions/volumes. Photorec is about files only. They are both vey good at what they are supposed to do, but in your case Testdisk is not suited and Photorec represents a last attempt as recovered files are carved, basically you will lose not only directory structures, but also filenames and metadata. A good GUI tool (not of the "one click" type, it needs some learning to use it) is DMDE: https://dmde.com/ https://dmde.com/