1 thing besides security patching is checking logs to fix random issues. You need to know where the logs are AND what is running on your machine. Most COTS store their logs within their application directory, which is different for the system logs in /var/log.

So you have a "decent level in Linux" but aren't aware of what it's like working in production? Hmm...

Working with Linux in an enterprise is much different from working in a home sandbox trying to get new apps to run.

How do your Linux systems authenticate? How do they log at scale? How are user accounts and permissions managed? How do you define permitted applications?

And then now, can you write documents to describe how all of the above work?

If you're not familiar with Change or Configuration Management, or Enterprise Systems Lifecycle Management, study up on those first.

Read up on things like (Open)SCAP, DISA STIG, and SIEM.

Learn how to use a private CA with RHEL, Java, Python, etc...

Make sure you can use Ansible at scale.

Red Hat knowledge is just one piece. There are also business operations standards and practices. Security+ and ITIL concepts cover much of this as well.