Nobara is very private, it's based on Fedora which is based on of Redhat. The only thing is it can't use Redhat repositories.
But there are a lot of RPM files which basically are deb files for Fedora, dnf package manager works rather well. There are also copr's and whatever you won't find there it should be on Flatpak.
Definitely more private than Ubuntu.
On Nobara you basically don't have to do anything. It autodownloads everything for you and I even like the stock icons.
It's basically holds your hand so much I don't think you need any tutorials.
			
 
		 Draugoth
 
			
 
		 Poppinfresh
Only a fresh pendrive and drop Ventoy in there. This is a really useful tool to make an multiple iso bootable pendrive.
You just install it, drop a bunch of files in there. And test stuff yourself, it won't work with secure boot enabled mind you.
I have one such pendrive and I keep CachyOS, Nobara, Stock Fedora, PikaOS and Windows 11 iso's in there. Really useful for testing distros.
And someone mentioned Bazzite but I don't use that distro but you could drop an iso of that distro also and test it along side of all those.