I didn't watch this pre-season game and it looks like a draw isn't entirely good for a team like Arsenal either. About Kai Havertz's game, I only saw highlights of his circulating on social media and indeed he played quite badly in this match. But I think Havertz is very natural to play like that because he also came as a substitute for Reiss Nelson who plays as LWF. On the other hand, Havertz and the other players who entered the field can be said to be second-tier players, so if you want to see good performance from Havertz, of course that's not the right benchmark.
There are so many people posted the highlight from the last match in twitter. You will be able to find so many short clubs about the match against numberg. Havertz has been performing so badly against numberg. Even some peole were also making havertz's statistic during the match against numberg.
Along with the excitement surrounding the transfer, there were also gunners who expressed their disappointment with the result. Havertz's main position must be playing behind striker. His real position was on the attacking midfielder.
I rarely saw him played as winger in chelsea.