Okay true, there is Debian testing aka sid. I have not tried that long term though.
But I absolutely dont agree "being used to ubuntu". Either you are a GUI person and the interface is not the same. Its GNOME and you need some extensions, thats it.
Or you are from Ubuntu and want proprietary packages, PPAs, or even Snaps! They seem pretty user friendly witg some features.
Or you want the nice background...
But apt? You just use sudo dnf upgrade" instead of sudo apt update && sudo apt upgrade`. The rest is Linux, everything is probably the same. Maybe some udev stuff, but apart from ADB (which is kinda poweruser stuff) its not actually needed.