You are poorly educated and citing generic stats with out understanding what you were just told.
Cool Americans will over buy guns, true. We are talking here peoples conduct with weapons.
Countries that have hostile neighbors or OG territorial approach, thinks swiss or Sweden, ave a gun culture and it is focused around defense and sport.
Not pro, I am sure there are others.
Gun ownership is not uniquely american, excess crime related to guns is tho.
Ps. it is likely possible to link it avaliability as a factor. However, banning guns won't solve underlying social issues.