Retrieving files from LOST.DIR folder

Hi, grateful for any advice to retrieve my files from lost.dir folder, most of these are photos with the odd MP4. I've tried many things but none are working. Even tried ES file explorer and renaming extension to .jpg but no luck. I've heard of software such as EaseUS but not sure on success or review of such data recovery softwares.

This happened whilst transferring files from phone memory to micro SD card.

I've seen the old post on here about using ES file explorer and renaming batch and extension, but this didn't work.

I have a Samsung Galaxy S9+ hope someone can help. Most of these are family photos.

 

Thanks. I've looked at this and downloaded the software to run a scan, but to 'retrieve' you have to pay. It's not cheap and I have no idea if it will even work. Have you used this before, does it work?

Thanks

 

Genuine Samsung SD card. All the files in lost.dir are over 3mb and even over 100mb as there are also videos. But of course they don't have file extensions and I have tried to rename with jpg and MP4 extension but the files just open up in gallery with an exclamation mark so aren't being read properly. I'm sure there must be a solution this can't be a new thing.

 

Thanks for the suggestion, but I need to get the files recognized first. Renaming extension to jpg for photos should allow them to open in the phones gallery so they are viewable, but that doesn't happen either

 

How can you establish for sure if they are corrupt or unstable?

 

obviously they might be corrupt, but i'm trying to reach out for help or a solution assuming they are not corrupt.