We are a software team of 6 in a large software company, 3 of us are more senior and have been here for years. Our manager is incompetent and a bully, within less than 2 years my manager have been here, they bullied 3 of our engineers until they left in bad mental health state and 2 interns weren't given return offers due to their negligence.
I will not go into the details of how incompetent the manager is. We who are still here just want them out ASAP.
The upper management is aware that our team has problems and the problems are mainly due to my manager, but they are slow to take action.
It is particularly hard because 2 of us are H1b, they can not risk losing jobs.
We want to oust the manager. What can we do? How do we handle it professionally?
Merry Christmas btw.