You only need one player permanently in or around the halfway line, but when it looks like you can get the ball forward (eg on intercepting a pass or winning a tackle) there should be at least 3 more players with pace flying up the pitch to take advantage of the opposition's weakened defence, before they have time to get back. At the same time you need at least 3 players moving to midfield for back up/sustained attack. If it the looks like the attack has broken down the same number needs to sprint back before their attack can get too advanced. There is no such thing as a formation that applies throughout a game. To fulfil this flexible approach (or what I regard as simply obvious if you want to score goals and not to concede goals) you need players with half a brain, pace and (importantly) determination. Are you missing a few of these? Even a team that is outclassed can beat better teams with this approach; Properly orchestrated direct football will beat clever tap dancers who can keep the ball for 60% of the game by passing it around in their own half, to me to you, back to him and so on (with the him often being the centre back or the GK). Of course, if the long balls are misplaced, or just as important, not anticipated by the strikers it can easily become hoof ball, which is no good to anyone. Very important to appreciate the difference and the only ones that can make that difference are the players on the pitch, regardless of the manager
PS good luck tonight. I've told you how to beat them