Sorry if I could just come in. No Lubavitcher school starts a niggun when someone has a question. A niggun of a tzadik led by a tzadik can do that in exceptional situations. On the contrary Chabad means we engage with the mind.
Questions do come from a lack of clarity. That is why in nigle sources, which deal with clarifying good/ evil etc. there’s many more questions than in Nistar, which is only about achdus Hashem (no matters involving tumah etc).
In golus, we ask many questions. In geula, we will learn in a way of seeing- things will be much clearer.
However, if one does have a question, obviously ask, or, ain habayshon lameid. Asking is great!