Going after the pass was fine, it's their CF receiving the ball, it's exactly what you expect your CB to do.
After that it's a good turn by their CF and the collision doesn't help us. Maguire will be disappointed to be turned, as any defender would, but it's recoverable. Shaw is too deep, Dalot offers no cover.
We're talking about a game in which Cavani missed a sitter, Ronaldo was anonymous when he came on, Rashford was wasteful, McTominay offered nothing with the ball, Dalot's attacking output was zero, De Gea's kicking was awful and yet as usual, it's all Maguire's fault that we didn't win. Again, a half-mistake is blown up to be something far more than it actually is.