How many work trackers do we need? At my last job we a number of them doing small pieces. ServiceNow for ticketing, bastardized JIRA for bug tracking and agile

How many work trackers do we need? At my last job we a number of them doing small pieces. ServiceNow for ticketing, bastardized JIRA for bug tracking and agile tracking, planview for tracking hours to projects/initiatives, and another 2 Visual Task Boards that my team didn’t have the displeasure of using thankfully. Sharepoint and Workday were mixed in for tracking edge case organizational stuff.