Can somebody explain how I can practice using React and JSX here on the code playground?

Answer 1

Use this template for basic projects

https://code.sololearn.com/Wi772Mr81mX8/?ref=app

Answer 2

If you want to use react on your phone. Assuming that it's an android phone. You can install termux and run npm on it. You can then install "create-react-app" using npm and run the web-app on your phone's browser. This way, you will have a complete environment to install and use other npm packages.

I used to do that for fun. You can Google it. There are many tutorials.