You cannot control the folder and file names within the library folders, see the following
Want to change the folder structure of the Calibre library?
Why doesn’t calibre let me store books in my own directory structure?
The file names are shortened and ascii-ized to cope with the limitations of the various operating and file systems calibre supports.
These issues are non-negotiable. However you have extensive control over naming and folder structures via the templates used in Send to Device and Save to Disk features.
BR