Their next fixture is a home match against Trabzonspor. Trabzonspor started with a victory. If Galatasaray continue to have the same issues in defense they can't be punished easily. But I saw some progress in the rematch against Ljubljana in the CL qualifiers. Hence I expect Galatasaray to win this match by a small gap.
Such things can happen in the first weeks, the players in the team are not people who have been playing together for a long time, there are new players. Therefore, it is normal to not score or lose points in the first weeks.
Let's see how they play this week, they will probably manage to get 3 points
Galatasaray needs to start the Trabzonspor match with high concentration. I expected GS to start the new season well as they kept their championship squad and made good transfers. But in the first match they played a surprising game against Kayserispor a team with no pretensions in the league this season. We can call these mistakes that can happen in the first weeks.
The key to a good atmosphere in the team, good camaraderie and not to be affected by off field factors is serial wins and to lead the league at the top. Trabzonspor are far from their former strength but their squad is not that bad and their coach is someone who knows the game well. Playing good football is a must in this match to win. I think Galatasaray will play an effective game in this match as they struggled to raise the tempo in the first match.