Exporting HTML games

When exporting a game to a website like itch.io what exactly is the process? I know the index.html file should be directly inside the zip but, how do you do that? I've tried so many ways of doing this, all unsuccessful. Please help!

Make a new empty folder somewhere. When you export as HTML, choose embed style and choose the folder you just made. Once it is done, everything in that folder needs to be included (c2runtime, media folders, offline.appcache, index.html, etc.). So don't pick and choose files out of there, send 'em all.

Thanks a bunch!