I’d say a sidearm you’re comfortable with to carry
And two long arms of your choice dependent upon where
Shotguns not much use unless you decide to survive in a tenement cluster
Which is stupid
I’d have a 20 caliber semi auto with ready ammo
.22 LR has been scarce in real loads since Shady
.223 I reckon
And 7.62
Both for ammo ease alone
Freepers love .22
I grew up with one from birth almost
It’s a varmint gun
I’m not in love with it
Where I live (Alaska) a 12 ga shotgun is an excellent all around choice. From #4 shot to magnum bear slugs, the 12 ga is versatile and powerful enough to handle just about anything from geese to moose; from bird hunting to bear protection. Obviously, if hostile humans become a problem, the 12 is up to the task.