I have a pi 500+ at my dads house to use when I’m there as well as so my dad doesn’t have to bother my brother for his laptop to use word. It runs libreoffice fine enough and despite being a bit choppy firefox works fine. I only wish it had tactile switches instead of clicky.

Centos exists as centos stream, which serves as upstream to RHEL and is downstream from fedora. For something like old centos, theres rocky

Yeah, redhat does certifications. Unfortunately you don’t get a hat afaik :(