How to Setup Yum/DNF Local Repository on RHEL 9 Step-by-Step

Mount had error with absolute path.
mount -o loop -t iso9660 /root/isos/rhel-9.3-x86_64-dvd.iso /media/cdrom
mount: /media/cdrom: failed to setup loop device for /root/isos/rhel-9.3-x86_64-dvd.iso.
had tp cd to directory and mount :
mount -o loop -t iso9660 rhel-9.3-x86_64-dvd.iso /media/cdrom
mount: /media/cdrom: WARNING: source write-protected, mounted read-only.

Very useful content... suggestion.. video is blur.. please improve video and audio clarity.... Thanks for knowledge sharing...all the best