This is slightly wrong; why do i say so? Liverpool generally had a poor and inconsistent season; but their attackers did not underperform, instead Liverpool struggled in midfield and Defense and Klopp has been wise to work on those weakness in the summer transfer window.
Salah ended the season with 46 goal contributions, Darwin Núñez ended the season with 19 goal contributions, Gakpo has 10 goal contributions (joined in january). Klopp has done the needful with the Liverpool midfield, next season; the squad will flourish
Currently, Klopp is still monitoring the transfer market to see which players he can buy so he can make Liverpool stronger next season. Because Klopp still needs some great players for lines other than those occupied by Darwin Núñez and Gakpo so that they can create more valid collaborations within their squad next season. Apart from that, Klopp must also have a slightly different strategy from the previous season so that rivals can have a little difficulty reading Liverpool's style of play.
So far, at least Liverpool have managed to sign Szoboszlai from Leipzig and also, Mac Allister from Brighton, both of whom are in the same position as attacking midfielders. Well, it seems it's pretty clear that Klopp is really prioritizing strengthening Liverpool's midfield for next season. Because yes, if Liverpool have a midfield player who has high creativity then of course, Liverpool will be well able to make attack after attack. But even so, I hope Liverpool's defense will also remain strong and solid. Because then, of course, it will make Liverpool have a big chance to become a candidate for the title in the European League. Also, it will make Liverpool strong in competition for the top four in the Premier League standings.