I can recommend to use Hugo [0] as a static website generator.
They have plenty of themes [1] to choose from. You can still adjust it with basic knowledge in HTML/CSS. Afterward you can chose where to host it. You can use Github Pages [2] for free or pay for a service like DigitalOcean [3]. I wrote a technical cheatsheet [4] on how to setup your own website with these ingredients.
Does GitHub support Hugo? As I only know that it has support for jekyll. If they support then I want try with it. I tried with jekyll but i find customization little complex.
Same. As far as I know, GitHub only supports Jekyll. If you need to serve Hugo for static site generator, I would recommend to use GitLab Pages [1]. It's free and you can connect your own domain and TLS certificates. Not to mention, your repository visibility.