It's strange that there are still many parties who still can't see the effect even though they have made a big contribution in the match, but are still associated with their inability to play for various reasons. Even though the impact of Nunez's inclusion in the match clearly changed the game scheme and Liverpool had the opportunity to carry out a quick counterattack so that they managed to come out victorious even though they had to play with 10 people.
I agree that Jurgen Klopp should must to include Nunez as the starting line-up and it is only fitting that in the future matches he will no longer play from the bench. Cody Gakpo can be tried in a Left Wing - Right Wing position apart from midfield, but I don't see a center attack position that suits him because he loses his touch to set rhythm.
Díaz constantly wears an angry face. Gakpo falls back, more defensive than Diaz. It's evident that the substitution was necessary; a defender was needed. Although there are players who get upset when they're replaced, as if they wouldn't be paid. I've noticed that any player who enters after 60 minutes scores at least one goal. The coach understood that they were left without defense and lacked proper midfield control. With only 10 players remaining, they needed to strengthen that area somehow, leaving only two forwards upfront. The coach took a risk on the other flank with an additional forward up front to counterattack.