Mainly, the “news” is not reporting what will happen, nor are they even telling you what is happening. Media reports are typically talking about what has already happened.
They do a great job of making the information seem current or relevant in the exact moment, but by watching from a different angle, you will start to see which events are about to die away, and thus your investment decisions will improve.
For example, the media talked the most about dotcom stocks just as the bubble burst. There was maximum coverage about pot penny stocks immediately before the industry plummeted. In any event, the news is telling you what has already been significant, not what is going on.