There are no "internal affairs" in government

The fundamental enablers of public corruption and incompetence are;

• allowing politicians and public servants to redact the record of their own public service and or,
• allowing politicians and public servants to self investigate allegations of their own corruption and incompetence and or,
• allowing politicians and public servants to write the terms of their public service.  In particular allowing them to tell the people, what questions they may or may not ask and the conditions under which they may or may not ask them.

Neither corruption nor incompetence can exist in an environment where allegations of them enjoy due process.

Secret self investigations followed by self consequence in secret, set in a culture of fear of retaliation against whistleblowers, is not due process.

It is not even close.

Public incompetence and corruption vary inversely to
the likelihood of their exposure and punishment.

You end public corruption and incompetence by

1. making them impossibly difficult to hide (transparency) and by
2. empowering whistleblowers with due process for their complaints (accountability).