How can I persuade my mother to be so rigid?

Hello first I would like to be more rigid but my mother thinks if she buys it to me then I'm only on the laptop but I will not be! And also told her that I would pay it with my money xo

can somebody help me somehow?

No.

You have to do it with your mom alone.

But if she opposes, then only help grow up!

You're right. I talk to my mother again and yes I get more rigid. XD so the question is solved

You could tell your mother to take the laptop away from you if you are too long.