Give players targets to take their mind off the other team that are playing badly. Set your attacker the task of three shots that are on target and your midfielders the task of four assists in the second half. Ask defenders to try to play out from the back at each goal kick. There are many targets you can give players to keep focus during the game. Praise for any of the targets being met, ask what stopped them making the targets if they fail to do them. Getting them to explain why is a good learning curve for the players helping them understand the problem.