There are some codes that understand HTML, such as lynx, elinks. For example, here is elinks extracting all the stuff in the sample HTML, and then, step-by-step, tables are refined, with sed,...
Please note that awk is NOT an adequate tool (nor is shell) to analyse / extract html data; there are way more apt tools to do this.
Please note as well that none of your files is valid html.
And,...