Other people think anything that they disagree with is "biased" and accept only information that confirms what they already believe.

To answer your question: do those on the right say Fox News is biased? Some do, some don't.

(Of course I see a lot of left-lean in a bunch of others.)

Example with Photo: https://www.thedailybeast.com/fox-refers-to-el-salvador-guat...

Fox News Headline: "Trump Cuts Aid to 3 Mexican Countries"

Issue: There is only one "Mexican Country" -- Mexico.

Regardless of political leaning, there is an issue with news like this.

I'm right leaning on some issues and left leaning on other issues. If you want right-leaning news, The Wall Street Journal is a far better source for right leaning news. I used to subscribe to the WSJ. Now I subscribe to the Financial Times which conveniently side-steps most US politics alltogether.