When I lived in Tucson 50 years ago I fell in with a group of former Detroiters and none of them used the N word. Over a period of 13 years until I moved - 1974 to 1987 - I don’t ever remember hearing it once.
We never talked about it, I never asked them about it, and didn’t even think about it until now, but either they knew better or it just wasn’t something that was natural to them to do.