Start with your exported folder, what name does it have? Does that equate to the name of the top level export folder. ‘HTML export’ essentially exports the entire doc, except those parts you set not to export. So for a note with 2 images in it you expect an HTML file and two JPGs.
Or, are you exporting a single page. either way, you should get an HTML file and—if the image is being exported from $Text—a JPG for each embedded image. So a note with 2 embedded images should output to the same location
IIRC, exporting a single page (i.e. File → Export selected note) for a document that has not yet been fully exported may result in the single HTML file (& images) being exported to some default location, like the desktop. If that happens and you want to view the HTML with the co-located images, just edit the HTML from your example above to:
<img src="name_of-Image.jpg" alt="" >
This will cause the browser to look in the same fold (locally or online) for the images to use.
Without anything to look at it’s a bid hard to delve deeper