Depending on your cable company, you would have to drop the tier CNN is on. That would also remove most of the non-broadcast network channels you currently get.
Go to your favorites, and remove the check mark in the box for CNN, and poof, its off the controller. Replace it with OAN, relaxing news and no CNN type hype.
“you would have to drop the tier CNN is on.”
Sadly, I think CNN is always in the lineup for the lowest level tiers by all providers. It’s the best way for them to shove it down our throats.