Move photos to a new iPhone without iCloud
Just modify some value, you can restore the high version backup to the lower version device, it is usually work in minor version updates.
First of all, open the device backup folder in finder and quit itunes, you can see a file name Info.plist. Get a plist editor e.g xcode, change the Product Version 12.3.2 to 12.3.1 Build Version 16F250 to 16F203, save the file then you can restore it to iPhone X.