We just don't use the width well enough.
Our style of play is a very counter attacking style, fast breaks which can be used against teams that are trying to beat us.
Anybody who comes to stifle the match and leave us no space, we struggle massively.
The reason for this mainly is all our play goes through the middle of the pitch. Our wide man aren't patient enough and don't keep wide, they're told to come inside and get into the middle of the goal, but that makes them super easy to mark.
Instead we leave AWB out wide who bless him tries his best, but clearly is no major threat going forward. Shaw is sometimes in the right position, but he rarely actually runs at anybody, he will instead either try to play it back into the middle for a 1-2 or hit a cross from deep which is easier to defend.
What i'm getting at is our style suits away matches, but not home. We need to use a different way of playing in home games to be effective.
Liverpool can manage this way because of their fullbacks being world class at crossing and attacking.
Look at Bayern Munich, we should follow a similar style to them. They play a 4-2-3-1 but their wide men stay wide way more often, then they hold the ball until the fullback overlaps and then they make the pass into the middle or play it on the outside. They don't even use inside forwards most of the time, Gnabry right and Sane left is their first 11.
How often is Greenwood/Mata/James/Rashford wide and holding the ball for AWB/Shaw to overlap? it just rarely ever happens. Rashford/Shaw are better at this and it usually works when they do finally do it.
TLDR;
Forwards are moving inside too early and blocking up the space for Bruno, not utilising the wide areas and stretching defences allowing them to block the middle of the pitch too easily. If they were more patient and kept the width until the fullback backs them up, we'd have a lot more success breaking teams down.