You’re making a logical error which I’ve heard called the “People Live in Cities Fallacy”. The biggest cities have the biggest number of crimes because there are more people there. So yes, more people are murdered by guns in New York City than in Yehupitzville, Iowa. But the rate of gun crimes (per 1000 individuals) is actually highest in places with lax gun laws, like New Orleans and Jackson, Mississippi.
I think the problem with gun laws is that almost anytime Congress tries to impose better restrictions, like wait periods, better background checks, gun show loophole closures, better registration, etc. the NRA and all of its unwitting goons jump all over it “The Democrats are taking our freedoms!”.