My direct superior was far too focused on pleasing management above, as compared to cultivating the team below. Feedback was rarely taken in if it didn't directly align with upper management's original directives, regardless of whether there was a case to be made for finding a better, more effective, more beneficial for all way of doing business. It never felt like my voice was valued or my ideas were heard - there was little in the way of support to grow my career. It was a very routine, mundane role because of how it was managed - there was more value that I could have brought forth, if I was permitted to do so.
Communication was lacking at all levels of the company when providing major company updates, bonus expectations/explanations, and relevant information that affected employees and their ability to effectively do their part in being an expert in their space (let alone having a necessary baseline understanding of all things they should, in the role).
Moreover, the manager I reported to typically failed at providing timely/relevant updates to the team, was delayed in responding to emails/phone calls that would involve inquiries directly related to executing the job (and would often go without answering them at all), and would simply be unaccountable and unreachable - they were even known to go away for stretches of time, whether for work or vacation, without even so much as letting the team know which caused confusion and inefficiencies that are otherwise easily avoidable.
I also took the time out of my personal schedule to provide very detailed examples of what (more specifically, who) lead me to my decision to leave the company, with the hope that things may change for the better for those still there (if that feedback was taken as seriously as it should have been). Unfortunately, it's my understanding that nothing came of it, nothing was done, and nothing has changed.
Training was lackluster; expectations didn't align with direction; opportunities were few and far between; communication was ineffective; leadership was non-existent.