What you say is true, Osimhen is a diamond, a brilliant striker but he also has some flaws. For example, he is not capable of dribbling and needs a team that supports him and passes the ball to him in the right way. He is not the type of striker who looks for the ball or looks for opportunities.
So you have to know how to fit into your team.
Conte understands the team and he does not want to get involved in speculation about Osimhen because if forced it will make their strength unstable. Osimhen no longer has the interest to play for Napoli and he prefers to go to another club than to stay. Osimhen's style of play does have some weaknesses and he does not have the ability to dribble or give a measured pass. But if you look at it, Osimhen has a good instinct in scoring goals and all he needs is a midfielder who has creativity so that it will be easier for him to score goals. At Galatasaray there is a possibility that he will get good service from the midfielder and he will be easier to score goalsSo you have to know how to fit into your team.
His statistics with Napoli have tended to increase since he joined, peaking in the 2022/2023 season when he could become a goal scoring machine for Napoli, last season he declined again because there were several problems he faced, one of which was injury and also the overall team play Napoli also declined slightly, so that affected Osimhen's performance too. I understand why Conte didn't include his name in the list of players, because every coach must have their own criteria, and Conte prefers Lukaku.