YouTube DLP would work, it's a command line tool, although I'm sure Gui versions exist.
You could download his videos using that, the command are a little confusing but just read the help text for each command and you'll get the hang of it in no time
NewPipe is a great youtube viewer for Android, it can also download. FOSS
4K video downloader you only need to pay to use youtube premium or auto download new videos. Free version works on win, mac, and linux.
StreamFab is very expensive, only works on Windows but allows you to auto download from most streaming sites: youtube, of, ticktok, instagram, facebook, netflix, disney plus, espn, crunchyroll, etc etc