Thank you, I read those two pages, and I fully understood how to create the index page and use the addon filter.
Unfortunately, I don't have an answer to my question: if I can't sort the displayed articles by date, what logic does the collection follow today? What is the display order? Does it use the ID? Does it use the manual Joomla category order? Alphabetical? Since I don't have a filter to tell it how to do it, the only option I can find is "reverse," but it simply reverses the display order, but I don't understand which order it follows.
The Dynamic Filter addon doesn't solve my problem. It allows me to filter by date range, but if I publish a list of news items, and they aren't displayed by date, it's a problem.