What do you mean? You don’t care, or, it doesn’t matter,or, you don’t mind?

I’m seriously confused, what’s the difference between these: You don’t care, it doesn’t matter, you don’t mind.

Well, each expression is connected to your personal opinion:

1. I don’t care who wins La Liga ACB .  Meaning: I am not interested in basketball.
2. It doesn’t matter who wins La Liga ACB.  Meaning: Basketball is not important and therefore it isn’t really important who wins
3. I don’t mind which team wins. Meaning: I am interested in basketball, but I am ok with whichever team wins