Maybe you two should spend time together.
Try to treat her like you wish you could.
Start to show her that you care and that you are interested.
Start with little nice things. Ask her how she feels, how her day was etc. Tell here some things about you.
And the hardest thing of course pls try to stop being so mean. This could hurt her and it hurts you .
I mean girls love bad boys but they want to be treated like a princess especially from him.
But this doesn’t mean you have to be mean 24/7. Just be youeself