Fox News has contrasted itself because it promotes news from around the U.S. and abroad along with political news all with a conservative point of view. Although Fox News has propagated fake news and false reporting, it's the appearance of promoting real news is in its format. Often beating CNN in ratings with editorial shows like Hannity.
Although CNN has news shows like Cuomo and Anderson Cooper 360, it doesn't differentiate itself from the political news of the day and is a continuation of the daytime news coverage.
CNN should cover more topics the way PBS does; it covers interesting world news topics, local news around the US, some topics such as poverty, homelessness, gun control issues, laws being changed around the state and federal level.
CNN has introduced some documentaries such as the history of comedy and the Windsors examples of entertainment content that lacks the credibility of a news source by promoting these entertainment value content.
CNN should change its format to attract more viewers of both conservative and liberal viewers simply by reporting more national and international news and less political news.
A side note the media, in general, has lost credibility with the public due to the way news is covered and the subject matter covered or not covered in many instances. Example: media trying to steer the public towards one political candidate by ignoring other candidates in coverage or in debate questions. Example: Andrew Yang was ignored in New Hampshire debate all questions went to Buttliegieg and Klobuchar. Klobuchar came in third place.