Those fuckers probably have turrets outside their bunkers and will shoot on site.

Get a single back hoe and pour rocks in front of the door.

I've played an enormous amount of post apocalyptic simulations and video games, so I've got some insight on how this typically goes:

The bunkers with beans and guns are rare, but usually whoever is inside died of something really common, like an infection, broken leg or a stroke, and was unable to get medical aid in time.

There's also loot boxes/caches in the woods where you see someone tried to be completely solo and typically "having weapons" is way less valuable than knowing how to use them

The OG meme is right, you need other people in "the apocalypse", going it alone is a death sentence, even basic things can become enormously difficult (many hands make for light work)

Make sure at least one of the people you know is a doctor, surgeon, or nurse of some kind

And if the "guns-people" ever band together (band-its) and try to take stuff away, they typically don't have coordinated field tactics or military discipline, it's a slog but battling the cannibals with a regular army does eventually result in their extinction

Risky game when the community garden people know which parts of the plants are toxic or not. Come try this "sloe berry" jam I made...