Restore an old displaced backup to a newer phone model
I previously backed-up my iPhone 6 with encryption on a Windows10 machine. Later that backup was moved to a portable hard drive from the default location of windows iTunes. Now I have a newer model iPhone 12, and I would like to restore that backup. I have tried to make a backup of my iPhone 12 to see where the default location is for the Backups on the latest iTunes. After I've learned where the default location is, I dragged-and-dropped my backup file there from my hard drive. But it does not detect anything. Is there anyways for me to recover my data? I also have a Mac, and I tried to pull the folder of backups there too from my hard drive. But apparently, the folder is full of .exe. So I doubt that the backups created from Windows' iTunes would work in Mac.
On a side note that might or might not be relevant, the iPhone 6 backup was created in 2017 on a different windows machine.. It has a snapshot folder, whereas the backup I created to see where the location is inside the windows has no such a folder.
iPhone 13 Pro, iOS 16