I convinced myself that manjaro is less stable than fedora. But not completely. It depends on the device and what is installed on it.
For some reason, I was able to run Manjaro on my hp laptop without issues for a long time. However my brother on his Lenovo laptop, the manjaro update just killed itself after 2 months. And this always after some months the updater would not work anymore.
I then installed Fedora on his laptop, and damn that thing stayed up and running for 2y now. Even after major system update, never broke, and package install always worked, at least when the tutorials are up to date on special things.
Like installing video codecs, I had to do another command which was not mentioned on the fedora docs, in order to switch from ffmpeg libre to ffmpeg. And then the rest of the install commands would work.