If everything we know about a person, whether it be a Thiel, a Gates, a Soros, a Barak, a Trump, we learned through the media, and, we believe the media is bias

If everything we know about a person, whether it be a Thiel, a Gates, a Soros, a Barak, a Trump, we learned through the media, and, we believe the media is biased, how much confidence should we have in our opinions of them? I spend a lot of time working out why I believe what I believe about people I know strictly from 2nd or 3rd hand information, and for the most part, it stands on pretty soft foundations. Hence, I remain flexible in my opinions in such cases. Meaning, I wouldn't write and publish articles that ascribe confidence in my conclusions.