Is there any way to download sites from Google Site?

I created a site using sites.google.com. Now I want to download it to publish. Is there any way that the site can be downloaded?

While you can get a hold of some basic content using HTTrack or equivalent, you don't need to download the website in order to publish it. Google Sites will publish the site for you, (instructions) from within the Google Sites editor.

The site can even use your own domain name if you have one. The instructions assume a personal Google account, there is a slightly different process for a G-Suite for Business Account.