I usually recommend new users try out a few distros from distrowatch on a USB stick with Ventoy making sure to pick a few different desktop environments to try (XFCE, KDE Plasma, Gnome, Budgie, Cinnamon...) There are hundreds and I would argue they have as much of an impact on how your computer works and feels as your distro.

What distro you pick matters less from a user standpoint than you might think. You're going to get a lot of recommendations for Ubuntu and its derivatives Pop_OS! and Mint. They're great for beginners IMO except for one small sticking point, which is that they've been shipping most software in snap packages and flatpaks which have their own quirks to learn. It's kind of like a little container or sandbox. You hear a lot of new users saying that they're having issues with a program not being able to see a file on their computer and it's usually because the program is a snap or a flatpak.