Absolute bollocks mate. Haaland scored which was his 88th in 100 games. He was lively first half and scored. We stoped creating anything second half as Brighton woke up and pressed us and our out dated passive approach was punished so Haaland hardly saw the ball. Haaland was the least of our problems. Regardless of not playing to his strengths which is quick transitional football he nearly always bags for us. So your post is a little odd.
It's Manchester City, not Erling Haaland City. He is supposed to adapt he hasn't.
However the main issue is the recruitment and youth systems failure on either buying quality or developing it.