You think 50 million (which is a number you pulled out of your ass in terms of the number of American people actually willing and able to fight) gun-owners with no requisite experience of combat, all they've known is the relative comfort of a peaceful life and on the whole knowing nothing of the kind of sacrifices that people fighting for their livelihood have to be committed to, with no leaders, no prep, no supply lines, separated by enormous distances, no equipment to quickly traverse those distances, and no funding (relative to the costs of modern warfare) are in any way a match for an organised, competent, experienced and physically fit fighting force being deployed in a competent fashion, and that's without factoring in the extra resources that a competent modern military force could and would bring to such a fight such as air support, encrypted comms, comms jamming, satellite coverage, military drones, etc., or using tactics like rationing the essentials and cutting off Internet / cellular access.
Your point of view is completely absurd.