It is not easy for new players to adapt quickly, especially in the Premier League with its intense gameplay --- so Gyökeres must first adjust in order to improve his performance at Arsenal.
It is more difficult for Arsenal to reach the pinnacle of trophies because they always fail at the end, ultimately achieving nothing each season, which is like a curse even though their team is not that bad.
It could be due to the intense competition, making it difficult for Arsenal to win any competition.
Victor Gyökeres has played in England before although not in the English premier league but his experience in England should be able to tell him what to expect.
I think he is a more mature player and he knows the pressure that he will be on, I think he will do well at Arsenal, he is a hungry striker that really want to deliver at the top level and Arsenal has giving him that chance.