Probably watch how City and Liverpool do it, and how our teams under SAF used to do it?
City: starts with their center backs, who usually have time on the ball compared to the midfielders who are positioned right outside the box, pinning the opposition in. They have the ability to rapidly switch play from side to side, looking for 2 v 2 or 1 v 1 situations that can be used to get in a quality ball or penetrate the box. For all the flack they get, their ability to act as secondary playmakers is underrated
Liverpool: TAA and Robertson do this but from the wing, they're able to switch play in a second. It makes it extremely hard to be compact against them unless you're packed deep in your box
SAF's great sides: Scholes was extremely good at switching play to the flank where we had a numerical equivalency or advantage, forcing the defense to stretch to cover the threat, while creating gaps our players (including Scholes!) could exploit
Conclusion? Cynical teams will give you the ball and dare you to break them down. If you're moving your best players forward into that space, you need people capable of rapidly switching play for you, and finding favorable matchups for your advanced midfielders/forwards.
If you watched the game against Tottenham, they couldn't have had it any better. We were moving the ball as if it was encased in molasses. Their pressing player was winning the ball from Fred and Scott several times, halting our momentum. When Pogba came on, his ball retention allowed us to build a head of steam but we were still stymied by an inability to create space on either wing.
Hopefully we sort it in the off-season.