kdenlive: https://kdenlive.org/
my music: https://unicornmasquerade.bandcamp.com/
my photography: / breadonpenguins
kdenlive manual (read it, it shows you how to do literally everything): https://docs.kdenlive.org/en/index.html
kdenlive donation page: https://kdenlive.org/fund/
my shortcuts file: https://github.com/BreadOnPenguins/dots/
@VeronicaExplains made a great video that covers kdenlive, too! • I make all my videos using Linux. Here’s how.
all footage incl. pixel animations is mine.
my wallpaper is a painting by Alois Arnegger ‘winter mountain landscape in evening light’.


It isn’t open source, but DaVinci Resolve is available for Linux. With limited features if you don’t pay. Might be overkill for what you do, and I understand it can be finicky to get it working (needs nvidia, poor support for AMD, very limited format support unless you get the paied version, …).
I don’t really do video stuff, but I did play around with it a few years ago, and it seemed very comprehensive.
Yeah that was the first one I tried. I was very excited about it too. But it would not run on my hardware.