What is clear is that at this time Mane position is still irreplaceable, Diaz and Nunez are still beyond expectations, that Liverpool still need aggressive players and have attacking instincts as well as being proficient in assists. Look at Nunez performance at the World Cup, just as he can't give his best. It still takes time for Nunez maybe 2 to 3 years he will be greater. But for now Liverpool needs a new player who can collaborate with Moh Salah on the front lines. Because Liverpool's attack structure is still ineffective.
Nunes is still too young, and Klopp brought him into the team with the prospect, he needs more time. But I cant say that Mane was an indispensable player for Liverpool, he did a lot of work and constantly kept the oppositions defense in suspense, but he was not the one that the team was afraid of losing. By the way, in Bavaria, he plays in the same manner.
The discussion will be long if you compare 2 different players who play a role in one team, especially when these players replace the roles of players who leave. Nunez is a potential player, but his adaptation process is not so fast that his contribution to the team he is defending, namely Liverpool at this time, is invisible.
Jurgen Klopp took him to fill in the empty space not without reason, because he saw how well Nunez played while still at Benfica. But does he directly provide something extraordinary for Benfica? The answer is no, because in his first season he was not that aggressive in scoring goals or being a player to contribute to goals. In his first season with Benfica, he only scored 6 goals and 9 assists from the 29 games he played.