That just is not true. Wyoming has a homicide rate of 4.4, while New York has a lower homicide rate of 3.2.
https://www.cdc.gov/nchs/pressroom/sosmap/homicide_mortality/homicide.htm
Gun violence is not just murder, but also suicide, accidental shootings, and even accidental legal homicides. For instance, a man who shoots his son who came home early thinking that his son was an intruder is completely legal in Wyoming. But it is definitely a gun death that could have been prevented by gun control. It is not a gun death that would commonly happen in Canada, or Switzerland, even though they have higher gun ownership than the USA. They have gun control, which the NRA is against.
If you want to go further towards gun elimination, Japan has a quarter of our population, but can go a year without any gun deaths. Wyoming has 0.2% of Japan's population, and cannot go even a week without a gun death.
The fact is that controlling guns, not eliminating them, but just controlling them, reduces all murders, and gun deaths. It also reduces suicides, as we saw in Australia. Two thirds of the people who would have committed suicide with a gun will find another way to commit suicide... But one third will think better of the situation, and not commit suicide. With murder, it is closer to 90% who do not commit murder. With gun accidents, and accidental homicides, it is well above 90% who do not do it.