The big banks have very smart people making very thorough plans with very powerful computers. They can see what news is on the calendar but they can also anticipate news events based on what’s happened throughout modern times. They will have reaction plans already in place depending on what the news is, some of these will require no human intervention.
As private retail traders, we cannot hope to be smarter or faster. We cannot hope to have more information about a given news event. But we have at least two things on our side - when the big banks make a trade, price moves and we can see it. And when we each make a trade, the other private retail traders cannot see what we have done.