Nah, it’s a mature take. Desktop environment means more for everyday user experience than the distro choice.
I have OpenSUSE Slowroll on one machine and EndeavourOS on the other. Both have KDE installed with exactly the same configuration. Aside from package management and other technicalities, the experience is 100% identical.
Fundamentally, they’re all the same and they all are Linux. As long as you use the same desktop environment (KDE, GNOME, you name it) across different distros, you may not notice a single difference in your experience.
That’s not to say there are no differences, but for someone just dipping their toes into the Linux world, the main piece of advice is not to stress that too much.
Ubuntu is a fine distro choice - there are controversies, and it is arguably not the best at X, Y or Z, but it’s well-rounded, stable, and user-friendly, which is all that novice user needs.
Of course, if you want, you can always explore other options and see what’s absolute best for you - this kind of thing is called distro-hopping. Start with something Ubuntu-based for familiar experience (Linux Mint is a common recommendation, if you don’t mind Cinnamon desktop), check out Debian as this is what Ubuntu is based on, and then try Fedora, OpenSUSE and stuff. After gaining experience with these, you can explore Arch and derivatives, such as CachyOS, EndeavourOS etc.
But again, if what you have works for you - you’re not missing out on anything special. What you have is true, real, actual Linux experience, and there’s no best way to approach it.
I would actually recommend against Cachy, as it is not very friendly out of the box.
Decent choice, but not for a novice user. Still, can be turned into same thing as everything else.