Are you having a stroke? Is there someone I can call for you?

I’m not a SuSE user - but did they not have the ability of using LVM or setting the hostname during install (GUI) prior to this?

Can you share which step you are up to which doesn’t have a non-systemd instruction?

Oracle Linux (up until 9.3 I think?) is a direct clone of RHEL. After 9.3 (or maybe it’s 9.2) it’s a best attempt clone of RHEL (similar to Alma Linux or Rocky Linux). If you want to learn RHEL then it’s a fairly decent equivalent with a couple of their own quirks thrown in (ULN, ksplice and the UEK).

Also, I don’t bother with certs or care if people have them. I have yet to find someone who knows a product better having got the cert than someone who’s used the product without a cert.