You can fill in the whole form with one action if you
use <TAB> in "Text to type" input field. It acts as you
actually pressed TAB button on keyboard. You can even
use <RETURN> at the end of form filling to submit form
data - it acts as if you pressed ENTER button on keyboard
to submit the whole form data.
Maybe not the best way to do it but you can scrape all possible urls on the page and then add all to a new list then you can take a random line from the list and click it. That would 100% work.