feel free to keep it strictly simple...

Rhel-server-7.9-x86-64-dvd.iso -

RHEL 7.9 Overview

Step 3: Create a Repo File

Create /etc/yum.repos.d/dvd.repo:

Desktop Improvements: Inclusion of GNOME 3.28 for environments requiring a graphical user interface. Rhel-server-7.9-x86-64-dvd.iso

: While standard maintenance has ended, organizations can opt for Extended Life Cycle Support (ELS) RHEL 7