cgsecurity.org

Thanks for providing all that additional information.
I looked at your logfile. I did not see the typical suspects. I have no explanation why the recovery outcome is so disappointing.
That means there is no hint left over for you, sorry.
If in doubt you could still try using the free versions of ...

Photorec and me do not know what "new files" are. There are only "files".

Yes you are right, just files.

Incomprehensible. The subject of the sentence is missing! Who is deleting? Photorec? Randomly?

I'm not sure, a few files gets recovered, one of them a big 8-9 GB MPG video file, and then ...

I have a 1TB HDD I need to recover data from. It had roughly 1.9 billion sectors.

I ran photorec and it worked roughly until 1.3 or 1.4 billion sectors, after which it starts to loop and randomly goes to 1.8 billion > 1.5 billion > 1.7 billions etc.
It didn't recover any new files except some ...