Try it using the desktop YouTube page. Generally if an address is preceded by an m. it's a mobile version of the page. Here's the same video but from the desktop page (and the first few seconds looked clear on my 2019 16".
So, the difference is that I used the standard YouTube page to find and provide the link to the video. The page you were looking at was intended for mobile devices (with the m.youtube.com link as I noted previously) and was not working properly on the desktop/laptop.