How do I make a purely HTML website run on my Raspberry Pi0?

I managed to get a WordPress website running on my Raspberry Pi0 by following a YouTube tutorial. How do I go about running a simple HTML website instead?

You can just replace WordPress with your HTML files. Web servers usually look for index.php or index.html and serve that. All WordPress does is generate HTML using PHP, so you don’t need it for a simple HTML website.

Create your HTML files, save them in a folder, and install a lightweight web server like lighttpd or nginx. Point the web server to your folder, and your HTML site should run just fine.

Pure HTML websites don’t need WordPress. You can install a lightweight web server and deploy your site. Try this guide: Really simple HTML server for Raspberry Pi.