Help all my libraries files LOST- Win 10 update

I recently updated my win 8.1 laptop to win 10. Then for the first few times that I used this computer I noticed that my files were hidden in the windows.old folder. So I copied them to their respective libraries and moved on.

Then earlier this morning I turned on my laptop to see some updates happening. After it happened, I saw my computer apps go back, and some of my customization settings. However, my library files are nowhere to be found (documents, images, videos, sounds). Any help as to how to recover?

If you search for a file or picture that you know the file name of (or even partial name of), does W10 it find it. If so then you could right click and look at the file location for a clue.

Whatever, I would ensure you copy the Windows.old folder contents if you have no other form of data recovery.