Their recommendation algorithm? really? I find it to be the worst I've encountered. It constantly just keeps shoveling the same few songs I've liked once over and over.
It also might be that you haven't liked/listened enough for it to be useful yet.
OTOH when I used google play for a few months, they managed to recommend a new to me band that was based in roughly the same area and playing the type of music I listened to.
So at least for that type of music, they were a lot better than anything I've ever got in multiple years of using spotify