I had to watch the first goal 4 or 5 times, in slow motion, to understand what happened.
For the second goal, Havertz scores. I mean, Havertz vs Karius, can you imagine? And Karius loses. Again. (Okay, Havertz missed a sitter later on, but still... )
Then for the third goal, a Newcastle defender gives the ball to Arsenal, Saka shoots and the ball is deflected twice by two different defenders and goes in!
In the fourth goal, Arsenal corner, and one of the defenders scores against Karius using his hand! Are you serious?