The attacker struck as the Reds won 4-2 on Sunday.
Gakpo said: "It was a disappointing few weeks where the results were not what we wanted. We could have scored more. It was a good day.
Advertisement
Advertisement
"Everyone wanted to do their best in the last few weeks but it didn't work. We wanted to enjoy it, play for goals, defend together and it was a good result.
"It was a good result and a good header. I'm very happy, very blessed. That was one for my son.
"Everybody is aware of the situation (with Klopp leaving). We wanted to show it for the fans but also for the manager and that's what we did today."