Order functionality in Laravel 7

There is a working healthy lifestyle project on Laravel 7

We are looking for a programmer with good experience in Laravel

Now the self-written functionality of the order has been implemented. But its limited.
For example:
- It is impossible to order several pieces of one product
- Cannot order T-shirts of different sizes

You need to understand the code and do:
- Add to the cart and order several items of different products
- Make item parameters: Size, Color

Details - we will call in the telegram.
Budget 25 000 rubles further orders for the project

GIT,docker,nginx,php-fpm,laravel 7