Basically Nunez has a very good posture to duel in the opponent defense, and also when Nunez gets a pass of course Nunez can win it even if it is a cross. Therefore, it's no wonder Liverpool prioritize bringing in midfielders. Because it will keep Liverpool midfield good after being left by some of its senior players, such as Milner and several other midfielders who left in this transfer market. Because at least, if Liverpool midfield is solid, then it will make their attacks better and also strengthen their defense too of course.
You are right, Liverpool's midfield needs to be strengthened. A stronger midfield will improve the performance of their attacking players. Manchester City's performance last season was very consistent. The midfield of this team I think is the best midfield in the world right now. However, with Liverpool aiming for the title, their midfield and defense need to be strengthened. Liverpool failed to qualify for the Champions League. The team's sole aim in the coming season will be to perform well in the Premier League. And so the team has the highest chance of consistent performance in the Premier League.
Klopp is still trying to find ways to strengthen the midfield to maintain balance in the team, overall team balance will improve Liverpool quality in terms of defense and attack. Manchester City is still one of the tough teams in the Premier League, even though several players who helped Manchester City win the treble winner last season have left, it will not affect Manchester City performance because Guardiola still has quality in his squad, besides that Guardiola has just brought in several players to maintain the chance of retaining the title this season.
Liverpool will try to target the title after experiencing a slump in the last few seasons, Liverpool's hopes of shifting the dominance of Manchester City will not be easy, other teams have also brought in quality players to provide competition to Manchester City.