Hi!
Power Automate is probably not the best tool for web scraping.
You can probably use WDL functions to manipulate the HTML in order to get all the stuff in between <table> and </table>. Then:
-If the table is simple, and properly defined, convert it to xml and use xpath() to extract all its rows, or
-You can also use 'HTML to text' and manage the following expression to convert its output into an array, each element a cell
split(trim(uriComponentToString(replace(uriComponent(body('Html_to_text')),'%0A','~~'))),'~~')
SEcond approach is simpler to implement in my opinion. FRom my little experience, none of them guarantee a 100% success
Hope this helps