I don't have close friends.
Why do you have no close friends?
Because I don't want anyone to be my friend.
It's okay to not want to have close friends and to remain by yourself. There is nothing wrong with enjoying being alone, and you shouldn't feel any pressure to have friends.
I don't want to waste my time hearing other people's problems.
That is a valid feeling to have but having friends isn't always about hearing other people's problems.