Very helpful article, just a few things to mention:
in Step 2:
in RHEL8 (and Oracle Linux 8 if you’re counting) apachectl is a shell script, to get the module display run:
(httpd is at /sbin/httpd in case you wanted to list the full path).
Outside of the scope of the referenced article, to see the compile settings of apache on RHEL8, run
Hope this helps!