Managers and staff take example of the people above them. If your leading a group your are the North Star, people are watching what your doing and copying your actions, if your unhappy with your teams performance you need to firstly look within before pointing blame and starting to micro manage.
Are you doing everything that is required? Are you leading by example. Do you coach regularly everyone who can effect your results? Do you give feedback around performance, both affirmative and adjusting, do you delegate tasks or do you hold on to them as a sign of power, do you conduct weekly one on one's.
These are the fundamental basics and its your responsibility to set the tone within your organisation.