for getting latest videos of a channel, use this URL format:
https://www.youtube.com/feeds/videos.xml?channel_id=[channel id here]
getting videos from public playlists use this instead:
https://www.youtube.com/feeds/videos.xml?playlist_id=[playlist id here]
gPodder with youtube-dl extension recognizes YouTube links so you can skip this
I was looking up how to get RSS feed so that I can put it into a podcast downloader thing, the program shows Technology Connections channel as an example so I dig on how to get a playlist into the program along with the channel.
More sample links:
(Tom Scott channel)
https://www.youtube.com/feeds/videos.xml?channel_id=UCBa659QWEk1AI4Tg--mrJ2A
(Citation Needed Season 8 playlist)
https://www.youtube.com/feeds/videos.xml?playlist_id=PL96C35uN7xGLtTqCh2iJ-aUIr10gy556Y