I use Apple Music without issue on iOS and Android (Samsung)
The android interface hasn’t updated to match iOS 26 yet, but iOS 26 is also a bit of a dumspter fire for the moment on my end.
I’ve always treied to keep my local library separate from Apple music, so if you plan on importing music externally I don’t know how well that would work.
There are third party clients on Linux but only the web interface is actually supported.
I’ve since found out that Linux can essentially act like a bluetooth speaker and started doing that instead.