Thought your players were very sloppy and pretty casual with their finishing in the first half. Glazer was playing well but most of the shots that were on target went straight at him. Red Star played better defensively than I expected (although you did create loads of chances, I thought they'd be even worse).
I warned you about Bukari in the pre-match thread, I said he's one of the fastest players in world football and he timed his run for the goal perfectly imo. I also said that Ivanić, who assisted the goal and had that one decent solo run in the second half was a good player techincally but a bit too slow.
In the second half, I thought your players took the game more seriously and played much better. In the away game you'll need to start the game like that, because a lot of great teams lost in that atmosphere after conceding a few quick goals (their 2-0 win against Liverpool in the season Liverpool won their most recent UCL is probably the best example). If you take it seriously from the start, it could be 5,6-0 easily for you.