But since I've recently run out of Serenity related material I thought I could ask you guys for recommendations on other channels to watch. Doesn't have to be as ambitious as SerenityOS - anything goes!
1: https://imgur.com/gallery/hYD2Qyq
2: https://youtube.com/c/AndreasKling
https://www.twitch.tv/rwxrob - very nice person, sometimes some IRL, usually some educational content
https://www.twitch.tv/rw_grim - pidgin stuff
https://www.twitch.tv/timbeaudet - the life of a fulltime indie gamedev, programming and marketing research, and fun chats
There is a wide variety of topics. It's a bit of hot or miss, many newbies streaming their learning and many more that are streams first and programmers second. They tend to do gimmicky things rather than focussing on a single project for a long time. There are also project maintainers there. Many cups of tea for you to choose from.