To expand on Casey's post, some folk have had success running the Windows iTunes executable under WINE on Linux, but it is problematic (
https://www.playonlinux.com/en/app-2586-iTunes_12.html) and I hazard that you will never achieve the functionality etc. of the Windows or the Mac versions.
Apart from that, there are effectively two solutions. Find a Linux alternative, or set up a Windows virtual machine and run iTunes in that.