Anecdote aside, it's established beyond a doubt that the US has much, much higher rates of gun violence than European countries, across every dimension: wounds, deaths, assault, self-harm, accidents... You name it, there's a statistic documenting it.
For example, according to healthdata.org, in 2016, physical violence by firearm was the cause of 210.5 DALYs per 100,000. In the Netherlands it was 10.8.
A DALY is a standardized metric defined by the WHO as "lost years of life" to measure the burden of a disease or other affliction.
So in 2016 physical violence by firearm caused 20 times more harm per capita to the US population than to the Dutch population. I'm willing to bet that for self-harm and accidental firearm wounds the gap is even larger, given the idiotic habit Americans have of keeping guns and ammunition stored in their homes.