Fix Drupal setup

I need Expert on Drupal and React


i have Drupal 11 setup on my local mac with Docker ddev.
and also created react folder project.

now i wanted to created custom theme inside the drupal and connect react to it . which doesnt work.

so i can share you the code base package i have

if you can fix it and make react connected correctly to custom theme and create header and footer react component to my theme let me know,

the react custom theme should have only header and footer .

the flow which i do is
create frontend logic on react folder and build then move the build file under custom theme ,

let me know if you can do better way and explain how it can be achieved .


thank you