I maintain the US has a bruce willis problem. An ethos that a good guy with a gun is the solution to all problems. It may even be, the issue is when someone thinks they're the good guy with a gun, and they're not. They think they're bruce willis, and they're not. They think they're righting wrongs, and they're not. Their narrative is out of sync with mine.
This is a cultural issue apart from firearms. I may not be sober enough to make this statement, so salt to taste - but firearms aren't the root cause, they're the lubricant in a wider issue where you're all bruce willis in your own story. This combination of firearms and individualism is what separates you from examples such as Switzerland, Czechia, etc. The guns are only the medium through which a deeper problem is expressed.