Given that there are governmental departments for interacting with muggles, and qualifications taught at Hogwarts, my assumption was that it was like many other fields of study typical members of the public did know little, but plenty of research exists. How much does the typical person know about nuclear thermodynamics? Not much, and they don’t really need to, but that doesn’t mean all of humanity knows nothing. Hermione states pretty regularly that the spells protecting Hogwarts protect it from being discovered and prevent electrical communications from functioning.
I would think that, in a war with muggles, any wizard signing up to fight would be given training (by those few governmental and academic experts) in muggle warfare, weaponry, and relevant defensive spells needed for such a conflict.
I have, more or less, lost all hope for my transition. I am the same place now as I was ten months ago. I don’t sound right, I don’t look right, I don’t feel right. Everyone else is moving on further and faster, and seems to be getting more results from less work.
I just want to go in to hiding and let everyone forget I exist.