Liverpool will not be strong not without Mane, but without cooperation and without mutual trust among players in the team managed by Jurgen Klopp.
Mane's move will certainly make a difference on Liverpool's front lines. because Diaz, Mane, and Salah played well up front.
Now Klopp will create a new front line with the arrival of Nunez. I'm sure Liverpool will continue to be strong next season. Liverpool won Nunez. although many other big clubs want him to.
The trio of Diaz, Mane, and Salah were absolutely good attackers for Liverpool however Mane stand out to be the most versatile among the other two players he can play at the flanks and the centre as well as addition of his physical ability and strength is an added advantage, I have not watch Nunez play thus I can't compare him with Mane, however I am very sure Liverpool will miss the contribution of Mane in spearheading their attack especially in crucial matches, there are matches were he singlehandedly broke the strong defence of their opponent.