Making websites from scratch isn't easy, you need to use specific technologies and protect yourself from common Internet Crimes, such as hacking. If you are making a website on a service such as WordPress the website would be quite secure and you don't have to worry about the security that much.
In 2020 the most common frameworks used for web development are Angular and React. These are also the most requested technologies by employers.
Angular is a framework that is focused around TypeScript while React is based on JavaScript. You can also make a website by using plain HTML, JavaScript and CSS but it would be more difficult. WordPress is based around php.
Python is also a good language for website. Google uses Python in their websites. The Python programming language is quite easy to understand and it is very reliable.
Before diving in into React or Angular or any other website framework it is recommended that you at least have a basic understanding of HTML, JavaScript, CSS and TypeScript as these are the building blocks for a website.
Making a website for free is possible but hosting a website requires money. Domains like .com or .net are expensive. If you are making a small project you can use domains like .gg .xyz .lol.
