I found it is really interesting! You can download and save Tidal music onto a USB flash drive by AudFree Tidal Music Converter. It can save my downloaded music on local folders. And I don’t need to login to the my Tidal account anymore.
This tutorial is just what you need：6 Steps to Download Tidal Music to USB
Tidabie Tidal Music Converter is also an expert in downloading music from Tidal. Worth a try!