If Manchester United has players who are able to defend the defense then this is very much considered because their strength is at stake, but it looks like Manchester United in the future have opponents who are not too heavy and they should be able to beat the enemy easily and have to take advantage of this easy opponent. to score a lot of goals.
I think they will struggle if they go against a team with good defense and a strong attack too. Right now I completely agree that their defence seems pretty solid with Martinez and Varane in there but their attack is why I have doubt giving a consistent result. They still need the sharpness in attack and hopefully with Martial return that changes a bit at United.
Manchester United will have a lot of problems because their main pillar players are injured like Varane, Martial and Antony so this can be a problem from the back to the front line so it won't be consistent anymore but I hope Ten Hag can do a little rotation on more players right to replace them.
But for the back line put Martinez and Lindelof while striker Ten Hag still believes in Ronaldo and Rashford.