He's under instructions to be in the box, what do you want from him? The game was played almost exclusively in their final 3rd, our slow build up means there's never any option to run in behind and we don't play the ball if there is so there only other option is for him to start dropping to thr edge of the box to do what? Pass it out wide and then not be in thr box if the ball does make it's way there? He's shown he can play as a target man, run the channels and hold up the ball, he has done it brilliantly more than once against arsenal we just actively choose not to use him in that way, he can't decide the tactics the manager uses.
Has the false 9 worked? We were just as useless away to united without haaland. Against Everton we got 2 very late goals after creating virtually nothing like today, against villa we needed a goal with the last kick of the game to pinch a win, wolves was an unconvincing 1-0 where they were the better side for most of the game, forest we were fortunate, palace was the only convincing win and that was after coming from 0-2 down when it really should have been 0-4 before we scored.
Our system hasn't changed with or without haaland, and that's the problem, we've got the best finisher in the world in the box and still play like we haven't got a striker.