webapp rec – What is the best way to create a website with a poor programming background?

My friends and I want to create a website as a university project, but it's so expensive to let a company do it for us. So we decided to do it ourselves.
The website is for booking An appointment with a doctor and it will also contain 200 profiles. I have knowledge of HTML, CSS and JS, but I did not need any database before. I need advice on what I should do and learn? .and how to make a site almost free? Where can I get help? .and make Google sites and firebase can do with it. can use wix or wordpress? ..
Thank you for reading …