JavaScript
Apart from being used in the browser, JavaScript is also used in backend e.g. using Node.js or Deno for writing server-side code in JavaScript.
If you pick up JavaScript for the Backend, my personal recommendation would be to learn JavaScript and then go with Node.js as it is the most popular and widely used option. Also, I would recommend learning TypeScript later on as you continue with your backend development Journey; it’s a superset of JavaScript and is used in many projects.
Visit the following resources to learn more: