Her profile is high maintenance.
Nick in my language means "i am not ordinary"

me: so you are "i am not ordinary", I would like to know what is special in you that other guys like?
her: bad girl character
me: well its easy to change
her: did i say its bad that i want to change?
me: well its ofc fun, but yeah its bad. you only dont undestand it yet.
her: its obviously not up to you to know what i understand and what not

I'm just practising

Your suggestions guys ?

I think you kind of blew it already. Imagine that the roles were reversed, and that she had actually talked too you in the way you talked to her:
Her: "What is your most attractive quality?"
You: [you mention some quality that you possess]
Her: "Well that's easy to change."
You: "Why should I want to change that?"
Her: "Because that is obviously not attractive. I'm afraid you're too stupid to understand why, but I do understand and I'm telling you it's not good."

Would you be attracted to this girl? Of course not, you would feel insulted by her presumptuousness and her judgmental mentality. And that is precisely how you made her feel. So spend a moment of thought on how the other person will feel when you say something to them before you actually say it.

As for how to continue, you may able to salvage this by changing the subject. An interesting riddle or dilemma would allow for a nice bridge: 'So do you understand this? Blablabla.' But realistically speaking, I would not expect her to react anymore, so my advice would be to chat up other girls as well.

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One of the most useful things you will ever learn about body language.

that is some solid piece of advice. thanks i appreciate it.
i thought that if she is so popular and so badass, I need to neg her. Obviously i did not have a thought of insulting her. yeah I am just practising and usually find myself stuck up in some stupid situation like this