For a newbie working with React, or JavaScript modules for that matter, it can sometimes take a little bit to wrap your head around working with web frameworks in a modular fashion. Here are some helpful links to using Bootstrap 5 natively with React. They include sass compilation steps to help customise bootstrap.
Bootstrap
https://designmodo.com/bootstrap-react-sass/
https://blog.logrocket.com/trying-out-the-new-bootstrap-5-with-react/
https://dev.to/codeply/is-bootstrap-5-react-worthy-4493
https://dev.to/codeply/what-s-new-in-bootstrap-5-2bb7
https://dev.to/tefoh/use-bootstrap-5-in-react-2l4i
express-validator
React JSON Schema Form
https://valerii-udodov.com/posts/react-json-schema-form/
Updating nested props
https://github.com/reduxjs/redux/issues/432