Good news: I don't! In fact, pretty much no one besides Democrats does.
You mean when the news tells me Trump is bad, and can't even report good news relating to Trump's administration without qualifiers, I shouldn't trust them, right?
I size the size of my block of salt according to the topic of the report. If the news story is about an earthquake near Kamchatka, a fairly small grain; about "bad news for Trump", a Himalayan-sized block. With conservative outlets, sadly, I am very wary of hype, exaggeration, and my own confirmation bias.