Van Gaal felt everything that could go wrong for United did during the game with Midtjylland
United fell to yet another defeat this, time to their Danish hosts, when they lost 2-1 even though Memphis Depay had given United the lead.
Goals from Pione Sisto and Paul Onuachu gave the Danes the win and Van Gaal after the game said that everything that could have went wrong for United, did go wrong.
Van Gaal, speaking to BT Sport after the game, said: "It is the law of Murphy I think", referring to how bad United's luck was on the night as they lost goalkeeper David de Gea in the warm up before the game started.
Van Gaal says the players heads were not right at the start of the game
Van Gaal continued to say: "A lot of bad things are happening in the heads of the players and in the first 10 or 15 minutes we were not so good" as the players seemed to take the loss of De Gea too heavily, and couldn't get their heads in the right place at the start of the match.
United finally managed to get themselves into the game after a shaky start and started to control it better. They deservedly got the opening goal when Memphis stabbed the ball home from close-range.
Van Gaal though, felt that they should have scored more and missed too many chances, and then in the second half he felt United lost every single duel which led to the defeat.
Van Gaal says United were very poor in the second half
Van Gaal said: "In the second half we didn't win any duels, any second balls. You cannot afford a second goal, but we could have scored also."
United just couldn't get to grips with the game in second half, and therefore gave the Midtjylland players the confidence to go on and get the win.
United now have it all to do next week at Old Trafford in the second leg, but there has been many matches down the years where they have managed to turn the tie in their favour and progress through in Europe. It will need to happen again this time or else Van Gaal could be facing the sack.