The modern "formation" is poorly understood by football fans. Its not one fixed, pre-defined thing like it perhaps was in the 90s, or even still is at lower levels.
Modern day "formations" are fluid and dynamic and are based on players' understanding multiple game scenarios and reacting according.
This is why coaching is so important. If the plan is overly complex and / or coaches can't convey their ideas in a simple, easy to understand manner, and drill their players effectively, you'll end-up with a huge mess.
We can bang on all we like about a 4-2-2-2 or a 4-2-4 but it's how we move from one shape to another that leaves us massively exposed. We play high risk, low reward football, where the regular turnovers we concede almost always lead to attacking overloads for the opposition because half our team are instructed to bomb forward and get ahead of the ball.
As much as I want to blame some of our players, they're doing what is asked of them. Casemiro and Fernandes are asked to play the ball forward quickly and take risks. Our full backs are asked to recklessly charge forward and get ahead of the ball when we have possession. Rashford and Garnacho are asked to mindlessly run the flanks like wide receivers.
What do we think then happens when we inevitably lose the ball (because, shock, high risk passes are high risk) and we have 6 or 7 players ahead of it and out of position?
It's madness, absolute crazy madness in the extreme. Top teams control games, they don't encourage chaotic, basketball-style, high variance games. Especially because it's so easy for the opposition to say, "good luck with that, you do that, we'll just sit in and pick you off". That's THE easiest way to play football, it's a great leveller, it plays right into their hands and it's why we make teams like Bournemouth and Palace look like world-beaters.