i mostly use the atlantic and new york times and PBS. the times have biases in their editorial section, but they are mostly trustworthy. i also like newsweek, time magazine. wall street journal, washington post, the economist. there are a lot more, but these come to top of mind.
when i think of die hard trump supporters, i think of not just fox news, but a lot of random youtube videos and websites that no one's ever heard of. or random memes and hearsay that needs fact checked. i do recognize that there are educated trump supporters who know how to vouch for a source's credibility.