Most managers don't know how to set a clear vision and get the best out of people. Promotions often went to friends and allies instead of candidates who may have a better skills set. Performance review can be very unprofessional and unethical. Communication during times of transition can be poor. It took my team 1 and half years of being threatened with redundancy to be given a final decision. As a result of the toxic environment a lot of colleagues around me had burnouts and health problems including myself.