Hi there,
In order to use web automation actions, it is necessary to select the proper web UI elements and work with their respective CSS selectors. This ensures that the elements can be interacted with in the background, without needing to focus any browser window or send any actual mouse click or key.
In the scenario you describe, if you want to completely avoid using UI elements, you could continue using the 'Send keys' action to navigate around the website and populate any text field you need.
Please, keep in mind that even if the HTML code of the page is challenging to handle, you can always edit the selectors of your UI elements to make them more dynamic and adjust them as needed.