How to get my parents to let me get a kitten.?

So long story short

I've been wanting to get a kitten for a long time now but it's hard cuz while ago my parents and I had a cat problem

A friend of mine got a kitten from someone without asking her parents and her parents r divorced and only her mom and step dad like cats so she asked me to watch the kitten 4 a weekend and I said ok and then she moved away leaving me and my family with the cat that we weren't perpared for. Cuz my friend asked me on a school day and have it to me durning school and what's really stupid is that it was only 2 weeks old, not ready to leave its mother

So then we tried to find a home for it and couldn't and said mayb we should just keep him

But we weren't ready for a cat, in fact we were probably gonna get another dog so my dog can have a buddy, and we had no time to get it fixed and spayed

And he scratched everything in our house

Finally we found someone who could take him and I miss him, so of course my parents r gonna b worried but this time we could b ready b4 Getting a kitten

How can I tell them that? Ik that we would have to get one that's probably a girl and already fixed and mayb even d-clawed to make my mom happy

But how? My parents r pretty strict sometimes but I'd like to get one for my b-day this month or mayb even x-mas

Please help thanks

(Ps excuse any type-o's)