Only some files generate when i install jekyll

I dont think this is even where i am supposed to ask about this, but maybe some people on here may know the answer. I am trying to generate and deploy a site using Jekyll, however i ran into an issue.

I use Windows 10, and i use Command Prompt for this, but i did everything necessary for installing the gem and i look at the folder it generated, and i dont have every file, i only have;

_posts _config.yml 404 about.md Gemfile Gemfile.lock index.md

Why are the other folders not generated? css, index.hmtl, _layouts, etc.

Is it because these were just in previous versions of jekyll and they arent there anymore?