Are there any Coursera courses that are actually for free? Whatever I seem to click in on it tells me that I'll get 7 days for free and then it asks to pay some ridiculous subscription like 40 dollars a month.

I am a pure math PhD and I need a rigorous enough course on these flavor of the month subjects like machine learning, data science and the likes, because frankly fuck math and I want to impress my dad by pulling up to his house in pic related.