Here's a good post from a German forum to the actual problems:
It's very simple.
This high defensive line works excellently when four basic requirements are met:
1. Intensity off the ball.
2. Consistent implementation as a team (everyone participates).
3. Confidence in this style of play.
4. Correct decision-making when tracking back.
If these four points are more or less in place, then this team and this style of play will be successful. Look at last season. Then you can even knock the top teams out of the stadium, just like we did last year with Bayern Munich and Real Madrid. But if it doesn't work, then this style of play is too vulnerable to win any prizes.
Inigo perfectly explained the strengths and weaknesses of this style of play last season.
"If we apply the right kind of pressure, it's hard for teams to get in behind us and find a player, also because our goalkeeper moves forward, and that helps." "
"As long as we get the pressure right, teams will struggle to create chances against us."
And we're not seeing that right kind of pressing right now. Playing the pass for yesterday's 3-2 goal under pressure is extremely difficult, but without pressure it's very easy. The consequence? It's exactly what Inigo mentioned:
"If we relax we'll pay for it."
Yesterday's game was a prime example of this.
Point 1:
The intensity is sometimes lacking. This makes it easy for reasonably good players to exploit this high defensive line.
This offside trap thrives on the opponent being under pressure, so they don't have time to play these precise passes. We saw it in perfect form last season when we caught opponents offside time and time again.
The question is: why are the players sometimes lacking the bite they showed last season? Is it a matter of attitude? Then Flick needs to take decisive action. Is it poor physical condition? Then Flick needs to adapt the style of play, because he knows best that his style is based on giving 100% intensity. For that, the players need to be physically fit. If they aren't, then you can't play the system so extremely; it simply doesn't work at this level.
Point 2:
Currently, the positional play is sometimes chaotic. That's inexplicable to me, because the team is practically the same. But sometimes the spacing is off, and the timing is wrong too. In other words, we're not compact.
Point 3:
Last season, you could see that the team had 100% confidence in this style of play. Currently, I see a lot of doubt on some faces. This style of play doesn't forgive even a second's hesitation. It has to be played with complete consistency. The 1-0 goal. That hesitation with Koundé. We didn't see that last season.
Rashford, by the way, is dangerous offensively, but he's one of the reasons why the pressing isn't working. He presses far too late and without intensity. You have to press at a sprint, not with a light jog. That doesn't put any good player under pressure at this level. If the attackers don't trigger properly, the whole team suffers. The strikers are absolutely essential for the pressing. They're worlds apart from what Raphinha offers off the ball. It's simply not enough.
For me, the fundamental question here is: does this team still believe in this risky style of play? If not, it is impossible to be successful if Flick sticks to it.
Point 4:
There are two basic principles when defending with this high defensive line. If you can put pressure on the opponent, then you can set the offside trap. We saw this done to perfection last season.
However, if you can't put pressure on the opponent, then setting the offside trap is simply foolish. There's only one solution: you have to track back! That can't end well; every decent third-division player in Spain plays those cut passes without any pressure.
The goal conceded to make it 3-2 is a prime example. Vanaken had the ball in midfield without any pressure from a Barca player. He had all the time in the world. In such a situation, you absolutely MUST NOT set the offside trap, because it's incredibly easy to time that pass perfectly. In this situation, the defense should be tracking back with their opponents.
If Vanaken were under pressure, he wouldn't have had time to play that ball. Then you can set the offside trap.
Another issue is Szeszczny. He exudes maximum insecurity this season, both with and without the ball. This affects the entire team. He's worlds apart from Joan Garcia.
The 2-1 goal is clearly his fault. With our style of play, he should have been much further forward and intercepted that (predictable) through ball. He could have easily intercepted it.
Flick seems convinced that some problems will be solved with the return of Joan Garcia, Raphinha, and then Pedri. I'm not so sure, because intensity, belief in the style of play, and collective work off the ball is a task for 11 players, not just 2 or 3.
The international break comes at the right time. But first, we have to play Celta Vigo away. If we play like we did yesterday, they'll have several clear chances on goal again. We've only won one of our last three matches in Vigo, and Vigo showed last season that they like our style of play.
On the positive side:
We were strong offensively. We scored three goals, hit the post three times, and created a string of chances. It had a similar vibe to last season. Lamine had a brilliant performance and showed that he'd been lacking one thing most recently: match rhythm due to his injury.