To be properly informed, you need different sources.
Information is a product like other products you consume; it should never be monopolized because monopolies tend to abuse. It doesn’t necessarily mean that media will lie to you, but as humans, we can only see things based on our own viewpoint, and this is necessarily subjective. There is nothing wrong with a newspaper or broadcast network that has some orientation: media is in the business of creating opinion, but you must never forget to look at the other sides of the story.