How to transfer iTunes Library to USB Drive and do I need to have an active Apple Subscription for the same?

I’m trying to put my itunes library onto a usb memory stick and nothing is working. I doesn’t work when I try to click and drag from my library. I looked in my iCloud and only about 40% of my music is there. My question is do you now need to subscribe to Apple Music to do this? And can you create playlists and transfer those to a usb using Apple Music? Or is it better to sync to your cloud? If it is how do you do this? Thanks for any help. 😊

[Re-Titled by Moderator]