Should the government set a minimum wage, or would it be better for workers to negotiate fair wages through collective bargaining? Or Neither?

It's my thinking that collective bargaining tends to work best.
The reason i think that is because governments know that they, as political parties, rely on donations from business and union alike for their own existence and prosperity.
So they are already 'paid for' in terms of passing law in favour of one or the other.

Of course. Such a system is open to abuse from boss or worker alike. So somewhere you need an independent check and balance to try and ensure 'fairness'.
From a body that has no political interest in either direction,yet has capability to work out cost of living expense and can determine a reasonable response should both parties become deadlocked in battles over pay rises and wage restraints.

Both. There should be a minimum wage that ensure a basic quality of life, and any business with more than a handful of employees should have unionized workers to negotiate fair wages for the work being done.

i think we should be able to set our own wages. if I am elected president that is my first duty

Collective bargaining is the optimum solution. With an independent arbitration service.

Whatever is best for the president and his family.

What government is that ?