I have a sister who is 12 and look at house of money and elite on netflix. I've told her several times before that she should not look at something like that you can delete it switched to child protection and she has always managed to open an account I have also told my parents but no.
what can I do that so that it listens to me
Nothing. That's the job of your parents, to take care of it.
Nothing and learn from her because obviously she is much smarter than you.
I can only advise you to let them go, the series will be over soon if she looks at it often. Are always only a few staggering. And if that is done, talk to her in peace. Maybe you can then look at a nice series that suits you.