I think it's been mentioned in the post match thread via tweets, but aside from all the tactical and man management deficiencies (which are glaring issues in their own right), there's also the stylistic and cultural differences which further highlight how this isn't a good fit.
There's a certain idea of what The Liverpool Way to play is. A lot of clubs have this too. Man United traditionally have fast, skillful, direct wingers, Arsenal over the last few decades under Wenger play technical football, Barcelona Tiki Taka, Everton have the aggressive dogs of war etc. These philosophies are ingrained in clubs, and you can point to some of the reasons why. History, tradition, culture, mentality of the fans, societal differences and the traditional values of local supporters etc... I used to think it was something intangible, "club DNA", something ethereal. But I don't think it is. Not entirely anyway. And when a manager or a group of players stray away from that club DNA, everything seems to fall apart. I think we're at that stage with this manager. Which is strange to say given we won the league last season, but I've gone through that elsewhere...
Basically, what I'm trying to say is that, when you think of the quintessential Liverpool team, you see effort, pressure, quick, dynamic attacks, with a bit of panache. It's similar to Everton in a way, though we play with a lot more skill and culture.
But that effort and determination and aggression is a reflection of the defiant Scouse mentality. That's why Klopp fit so well. He embodied the same principles and embraced that mentality. It's also why the Bluenoses start booing their own players and get on their back when they were trying to play Tiki Taka with 3 in defence under Martinez. Get it right and it all clicks, you get a fervent atmosphere, a symbiotic relationship between players and fans where both feed each other until the pressure reaches a crescendo and the team becomes a red wave that cannot be beaten. Get it wrong, and in a team like Everton's case, the fans don't buy in, things in the ground become toxic, players become scared and timid, and you get a negative feedback loop instead of a positive one. You can see it at United too since they've stepped away from the Ferguson principles.
This is what is happening under Slot. Slow, measured, possession football might work at other clubs, but not here. It's not in our identity, it's not part of the Liverpool fans' DNA. When you go against that culture or mentality, you take away the passion of the fans, the lifeblood of the atmosphere. When the atmosphere starts to wane (and there's other contributing factors for that which I won't get into here), you lose that potential to give the players that extra boost, that YNWA mentality. You get that negative feedback loop I was talking about. Players second guess their decisions, they doubt themselves, they play with fear, they're no longer in the groove, in that liminal space between consciously carrying out a tactical plan, and being carried along by the swelling momentum of the crowd, the atmosphere, the pressure.
I guess what I'm trying to say with all the pretentious, flowery analogies is that Slot's style is not a good fit and contrasts with what this club is all about. The fans can't resonate with it, the players can pick up on that energy, and you get this growing negative and damp atmosphere. Last night, Ekitike was trying to gee up the crowd. Konate, too, the other day against Wolves. They can sense the atmosphere dipping. It might look like the fans are neglecting the players, but as I keep saying, it's a symbiotic relationship. The playing style gears up the fans, which gears up the atmosphere, which gears up the players...
What's that old saying? Get the ball near The Kop and the crowd will suck the ball over the line? Not for much longer under this manager and his cold, sterile style of play, it won't.