Dominance was there of course, but I think Sloth will not be satisfied with how Liverpool allowed Bournemouth to come back into the game in their home stadium. They became slightly sloppy after their 2-0 because normally they could lead by 4 goals instead of 2 if they had taken their chances seriously. For a few minutes during the game after that dominant start, I had the impression that some of the Liverpool players were celebrating the win already. That is not how a coach wants his team to go about comfortable leads.
Yes, I agree with you, that in this match, Liverpool's players were too complacent because they felt they were ahead. But in the end, all of that nearly resulted in a draw for Liverpool. Fortunately, Liverpool's players quickly recovered and regained the lead through goals from Chiesa and Mohamed Salah. Although Liverpool ultimately won this match, things like this shouldn't be allowed to continue. It would be very dangerous if Liverpool displayed this kind of performance against strong teams like Arsenal or Chelsea. When great teams are given the freedom Liverpool gave Bournemouth, it becomes a very serious threat.

Therefore, Arne must immediately correct this and prevent a repeat in future matches. Especially in the upcoming match, Liverpool will play Newcastle, which will certainly be more difficult than Bournemouth.
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