Yup, agree with all of that. At 1-0 I was still quite positive.
But the reality is that we have really bad defenders; Chambers for the first, Kolasinac for the second were just individual errors that professional footballers shouldn't be making. We've been unlucky with injuries at FB but there is no excuse for a club of our wealth having CBs as bad as Mustafi and Chambers and yes, Sokratis.
And as you say, the team is screaming out for a proper manager.