Persuade parents to pay for ps5?

I would like to have the ps5 but already have a Nintendo switch. How can I persuade my parents that I get money for the ps5.

You want a PS5 for Christmas

Just wish them for Christmas.

Whether you will then get it is, of course, another question.

You need to say this for homeschooling in case the quarantine reigns.

Why do you want it so badly? It's a waste of money anyway.

Better get a used PC.

Nobody is that stupid and believes that. That might work on a computer.

You probably have to do something with the newly gained time, then a console is perfect.