one month ago, I had my laptop upgraded to have an SSD hard. As a result, Windows moved to the new drive and my lovely Anki was uninstalled. However, the information is existing yet.
In addition, Unfortunately, I did not synchronize or got a backup of the data beforehand.
If you used a very old version of Anki, your data files will be in your Documents/Anki folder. But chances are they are in the location mentioned in the link I posted above.
I can’t receive your files, but if you list the filenames here (eg with a screenshot), then we should be able to tell you what version of Anki they are for.
Your Anki data will be normally in the C:\Users\%USERNAME%\AppData\Roaming\Anki2 folder. If all data were moved to the D drive, that should be D:\Users\%USERNAME%\AppData\Roaming\Anki2. Did you search there?