Inter were stunned 2-0 as Flu struck through German Cano and Hercules.
Lautaro snapped at the final whistle: "It certainly hurts, it was a last objective with the little strength we had. We left everything behind, me first: I'm sorry for the group, we didn't want to lose.
"Here you have to want to stay, we are fighting for objectives: whoever doesn't want to stay, has to go. I saw many things that I didn't like: as captain, I want to fight for objectives and we are an important team. We won and I want to continue like this: whoever wants to stay, can stay while whoever doesn't want to stay, goodbye."
The Argentina striker also said: "We all have to reset: we can't go anywhere alone. I am the first responsible, being captain. I apologize to the fans, it's a defeat that hurts. We are here in a season that is too long.
"We will fight, now we will rest a bit. The season has been tiring, now we recover energy and physical recovery to then begin the preparation to bring Inter back to fight for important objectives".