Earlier quoted context omitted.
On the one hand it is indeed disappointing that nobody would help you with this. On the other hand, there's a more pro-active role you could have played yourself in this as well. "When everybody is responsible, nobody is" - what often helps is specifically asking people, by name, to sit down with you for a bit and help you get through it. In fact, there are many social group situations in which asking specific people…
This is similar in emergency situations. When you need somebody to call 911, don't ever say "Somebody please call 911!". You have to look at someone, point at them, and tell them "I need you to call 911". Most people will either stand in shock or think that someone else is on it.
The bystander effect is real, but I wouldn't expect to see it in organisations with explicit hierarchies. Can you imagine this happening in the armed forces? If this happens under your watch as a leader, you're not good at leading.