I just switched from Windows to Linux recently. Have gone from Zorin to Linux Mint and my friend likes Ubuntu. I would like to think that I watched a lot of videos and read a lot of articles before switching, but I've never heard of immutable distros. Could you please explain that term?
Edit: Grammar.
Don't go with Intel. Anyone recommending intel should be ashamed and should have kept up with the tech news about Intel's CPUs basically burning up and Intel ignoring the issue, including all the warranty claims. NO INTEL. AMD Cpu and Gpu, because AMD develops more for Linux than Nvidia does. But you could still go for Nvidia (if you want raytracing on in games).
I think we have to give credit where it's due and a lot of Linux apps (mostly the non-distro ones, so no Gnome apps etc.) Do have quite dated interfaces. I can't find a nice mail client except mailspring and bluemail, both of which then come with some features not working (depending on your distro etc.)