What can I do about being treated unfairly?

My mother treats me quite unfairly to my sister. My sister got a PC for her birthday and I got nothing. For the first time I got a birthday present a PlayStation but my sister always plays on it. When I say it's mine, she starts lying and crying that I hit her or something. She believe her in everything and I'm always accused. What can I do about it?

Undressing should help.

I'm only 13

Live with it.

Life is not always 100% fair

Also: who says you can't even use your sister's PC?

You got a playstation. So don't pretend you're Cinderella

If it is so then it is so. Your parents will have their reasons. Maybe you can have an influence on it in terms of better grades or something.

But you will hardly change it and as long as you eat more or less, have clothes, school supplies and a bed with a roof… Do your duty

What do I have a PlayStation for if I'm not allowed to use it?

There are probably reasons for that…

It is understandable that you have a sister who is perhaps older than you and who needs the PC for school / training. You are not alone with your problems, accept it as it is.