I believe there are significant issues with the Galatasaray team's recent performance in the UCL, and the responsibility ultimately lies with the manager. In the last two matches, the team has been poorly managed, and key players such as İlkay and Icardi have not been performing at the expected level. While Sanė shows strong individual qualities, he does not appear to contribute effectively to the team's overall structure.
The inability to convert opportunities created during the match into goals eliminated the chance to equalize the score.
There also seems to be a clear problem in the midfield, which urgently requires attention and restructuring. Additionally, a considerable portion of the squad is either out of form or dealing with injuries. Galatasaray was lucky Monaco didn't have a striker, if they had a good striker, they would have conceded 5 goals.
Galatasarays season in the UEFA Champions League hasnt been very successful. While the coachs role is crucial for a team, the context behind the results also needs to be considered. The 1 - 0 away loss against Monaco was not only unfortunate but also highlighted their significant lack of finishing ability that day. They created several chances but failed to capitalize on them, and even in the final stages of the game, they couldn't convert those opportunities into goals. Similarly, the heavy 5 - 1 defeat against Frankfurt at the beginning of the season occurred when the team was plagued by practical problems in defense.
Its true that the coach influences a teams performance however there are many other important factors. Player injuries, squad depth, the inconsistent form of key players like Icardi and Gündoğan and especially the added burden of responsibility on Icardi compared to Osimhen are undoubtedly significant. Tactical development in the game is also very important, especially when players fail to convert chances or make mistakes insa defense. Nevertheless I believe that these two aspects combined play the most influential role in determining the outcome of a football match.