I can't find a button or icon to permanently remove a song or album on any of my devices. The three dots just give me choices to save or share in various ways. I understand that I cannot remove a song from someone else's playlist. I think some of the albums might have come automatically from some sort of Explore feature which I will turn off for future but I have to get rid of this stuff now. A friend's iphone has nice clear red buttons to remove but we could't find anything like that on my devices.