He needs to do better but then the team needs to do better for him as there have been countless games where he hasn't even registered a shot on goal so deprived of service he has been
This goes both ways and the argument is flawed to begin with. Perhaps the pass didn't come because Lukaku made a terrible run, didn't bother going on a run or just made the wrong decision? Smart players love to play with other smart players, I would counter your rhetoric by saying he lets his team down by not following their moves, something the best players around the world definitely do. We aren't Everton or WBA, we don't just play to him by lumping balls over the defensive line on counters. Lukaku is big and strong and scores goals, but they are often just "classic" goals. He is not a very smart player, his touch is average and his interplay with the others is also mediocre at best. He never scores goals out of nothing or because of individual brilliance, he doesn't have an edge other than being bulky. One of the most annoying things this season is when he gets the ball outside the box and takes a touch, before unleashing a shot right into the block. Time and time again, always in the block, losing the ball. Time to evaluate decisions when the same things happen over and over, time to pass the ball or take a dummy, it's not rocket science. Top that with the fact that he hardly scores goals against the best teams, and that he sulked in front of the fans earlier this season because they were hard on him. He has in no way made it yet at Manchester United, he has to bang in lots of goals to be in a position to say "I told you so" in front of the crowd at Old Trafford. You can't act like Cristiano Ronaldo when your league tally is closer to Carlton Cole and Emile Heskey.
Next season I hope - and expect him to do much better and score around 25 goals if he plays as much as this season.