1. I didn't delete them; checked my Recycle Bin multiple times.
2. I didn't save them on other host sites.
3. Well, I am looking for the thumbnails, I know that the files aren't there.
4. Searched multiple times, nothing came up.
I accidentally lost my files and I've seen that I have the thumbnails in File > Open Recent. I want to found these thumbnails and get the files back.
I use the Microsoft Store version of Paint.NET.
Searched directories:
paint.net App Files
paint.net User Files
AppData/Local/paint.net
the directory where Paint.NET was installed