What is your preferred way of downloading youtube videos?

I'm looking to download a number of educational youtube videos for future reference. Looking for a reliable way to download videos. OS is Ubuntu. FF extensions and docker containers all good. I don't really want to install an executable on bare metal unless it is a flatpak.

My goal is for the downloaded videos to be accessed locally via jellyfin. Jellyfin is already sorted.

Thanks in advance for your recommendations!