How to include .js libraries in a React project?

Question

React

I have a regular html file with libraries in the header:

<script type="text/javascript" src="assets/jquery-3.6.0.min.js"></script>
<script type="text/javascript" src="assets/jquery-ui.min.js"></script>
<script type="text/javascript" src="assets/jquery.ui.touch-punch.min.js"></script>

At the end of the tag, I also include 1 more script that uses libraries: How can I connect all this to a React project? A simple import "./assets/main.js" doesn't help here :(
<script src="./assets/main.js"></script>