Convince father of gaming PC?

I'm 15 years old and I would like to convince my father of a gaming PC. I'm only mediocre at school and I currently have a pretty bad laptop to work with that is not good for gaming. My father is against gamers and is quite stubborn. I would pay for the PC myself and also assemble it myself. I already have a screen, mouse, keyboard, etc.

Then suggest a deal: get better at school, you can buy it for that…

In the end, talking only helps anyway…

Maybe you can compromise with him?
For example, you help with various household chores. Unfortunately there are not many options.

Tell him and I mean your money your rules as long as you don't make tattoos of it why not

Well in the household I help half a day anyway…

What do you work with the laptop? Do these things run smoothly?

I'm mainly in the browser and work with Microsoft Office, which actually always runs smoothly