Silva believes his side had a chance to get a point away from home, if they did not concede soft goals to the runaway Premier League leaders.
"We did everything in a different way to how we prepared. We were too soft in the first 20 minutes," said the Watford manager.
"Too much respect and some nerves. I told them to compete here, the first thing we need to do is not be scared or nervous.
"We had chances. The last 20 minutes we were better. We need to compete for the whole 90 minutes.