I want to use someone who likes being used
Why would you want to use someone?
They want to be used, so I don't feel bad about it.
Even if someone thinks they want to be used, they probably do not. It is not okay to take advantage of people who are in a vulnerable state.
My definition of using someone is different. I want to make fun of them, use them, insult them repeatedly and make them do things.
That seems worse, hurting people is not good even if they want it. You should seek some help so you can understand why hurting others is not right.