You're forgetting one thing. Trump was in charge of the country last time and couldn't pull it off.
This time the military and the police will be ready, and you know that any trooper that's even half way suspected of mixed loyalties will be reassigned to a safe post.
While I can believe that, I also hope that support is kinda spread around and mixed in. So they would find themselves choosing between Trump and loyalty to their unit.
Please go outside, go to a coffee shop or a bar and sit down and people watch. You'll see that the majority of people are tired of radical polticization and just want it to end. There will not be a Civil War
And the beauty is that all the maga idiots wear their loyalties on their sleeve by covering their homes with tacky Trump shit. Keep an eye on those homes and vehicles and if something even remotely looks sketchy, call the police. And keep calling.