there are many mp3 purchasing platform, even Amazon Music! those purchased mp3 file has no drm protection. but for avoiding to amazon msuic bugs, i backup them to my usb with viwizard auido capture), beatport, beatstar(maybe the same? they are not my pick), Soundclick( suprised by its music genres) , and Jamendo.
good job, i tolerate some ia tracks, and ytm seems to trend it, so i give up but save my favorites with viwizard streaming audio recorder, listen without any ai disturbs