Personally, I really like dnf over apt, SELinux over apparmor, and firewalld over ufw, but it’s all personal preference.

I typically just ‘dd’

I’m pretty sure gnome-disks can

https://github.com/labwc/labwc

Should just be in the kcalc settings and set your font preference (including size)

I’m not one for journalling but I was looking for notes and I didn’t like Logseq since it was to journally for me. https://logseq.com/