Actually, three goals from Galatasaray is not totally mistake from Andre Onana, most weakness with left and right defender position how Galatasaray easily scoring goals last night. Despite his fatal mistake with wrong passing and make Casemiro have received second yellow card actually Manchester United defensive most weakness. Personally, I most excited with Manchester United forward Rasmus Højlund success made brave in this match and specially his second goals with brilliant dribbling start from in the middle field, but he was not luck with Manchester United have got bad result.
You're absolutely right. It's not fair to put all the blame on the goalkeeper for every goal conceded, especially when he managed to save a penalty. It's worth noting that MU had a decent performance, but Galatasaray seemed to have aged.
A team from the English Premier League also had unpleasant results because Arsenal lost to Lens even though the away team managed to control the match Lens managed to take advantage of better opportunities.
Arsenal had a stroke of bad luck, while Lens played impressively on their home turf. This defeat isn't too damaging for Arsenal in the Champions League, but it does tire out their squad ahead of the big match against Manchester City this weekend. Mikel Arteta fielded his strongest lineup against Lens.