Losing belly fat, Help please!!

So I live in a big family of 8 kids and my mother is a single parent. We are limited on money for groceries, I do the errands and grocery shopping. I am the only one who wants to lose weight,

so I would like to know if there is any cheap things to buy to lose weight quickly but in a healthy way

Any recipes I should try?

Snacks I could eat?

I’m bad at eating three times a day and all I eat are snacks and chips I’m so bad at this🤦🏽‍♀️

My favorite thing to eat is White rice 😂

But anything would great!

Thank you guys so much ❤️