This. More specifically, you need to find a link like this (https://cdn15-leak.camhdxx.com/2ovk4HScn3zJt3c1ZXvAnQ==,1679350089/12037/2244803/index.m3u8) to use with youtube-dl.
This one is from the video you linked, but I don't know if it will work for you.
I was writing a longer tutorial, but I lost it when trying to paste something (I hate that bug). Basically, you need to open your browser developer tools, in the network tab, and find a connection to a URL similar as the one above. Then, you copy that URL and download it with youtube-dl.