we have 84 Million people

So either Turkey or Germany.

I will assume Germany...

As of 2021 has an intentional homicide rate of 0.8 currently... (https://www.macrotrends.net/countries/DEU/germany/murder-homicide-rate random quick google)

We see a blip UP in 1995 and a leveling out starting around 2008... and a jump in 2016... and a downward trend again.

Which is basically the same as the USA.. https://www.statista.com/statistics/187592/death-rate-from-homicide-in-the-us-since-1950/ (random quick google)

The trend has been downwards at a slow pace everywhere... (lets ignore the covid timeframe overall... That's a different issue and we all know that it is). None of it lines up with ANY restrictions on guns. So if banning things doesn't trend the line down more than the overall world is already trending down... Then overall homicide didn't change outside of the typical trend. It stands to reason that banning the guns in that case didn't save any lives... Just shifted the deaths to other forms of death, and only took away your right to have guns...