Losing Mane is indeed very unfortunate but on the other hand it is also not only because it seems as if Mane left Liverpool lost confidence. I don't think of it that way. Mane is indeed a very good player, but we are talking about the whole team and Mane is only a small part of Liverpool's performance because the biggest part is that they still haven't been able to maximize their team especially in attack and a chaotic defense.
Yes i think so too, people actually need to get over the "Liverpool miss mane" thing, yes they miss him, but they are a team and he was just a player in that team, a very important player by the way, but everyday players leave their clubs for one reason or the other, but the club remains, and if they struggle after the player leaves, they have to find solutions to their problems, and not cry over the player that left.
Having said that, over the past few days since their horrendous performance against Napoli that saw them concede 4, Jurgen Klopp has talked about how desperately they need to 'reinvent' themselves, they know they can do better, and i am sure the coach and the players are working towards doing better, the talk of Mane should be over by now, he now represents Bayern Munich.