The easiest way, IMO, especially for what you’re describing is to use https://carrd.co/
Choose a template, then make changes to it. Then export the site, which lets you download the files as a zip file. Extract the zip and use https://juno.build to deploy it.
You can also use Webflow, which alot of people use to build websites, then download the generated files as well: https://webflow.com/
You can use AI generators as well to get more customized results:
https://v0.dev
There aren’t a whole lot of step by step instructions for absolute beginners, so I would recommend just trying out those options and posting and ask questions where you get stuck and people can answer your questions, and more guides can be created.