Are your news sources diverse? How do you encounter viewpoints different from your own? Can you listen and try to understand the other side?
If the answer is no, you may be in a filter bubble!
A filter bubble is caused by website algorithms that selectively choose information for you based on previous choices (see Eli Pariser's TED Talk). For example, if you click on Facebook posts about certain topics you are more likely to see more posts like these. This can shut out other viewpoints.
Different media outlets have varying degrees of reliability and political stances (left, right, neutral). Organizations like ad fontes media and AllSides have analyzed media outlets for bias and reliability.