Questions about Mass Shootings in the USA

I am not seeing the relationship between gun ownership and mass shooting.

These shootings are a socioligical and mental health issue.

• https://www.statista.com/statistics/811541/mass-shootings-in-the-us-by-state/
• https://www.az-defenders.com/best-states-for-gun-owners/
• https://news.gallup.com/poll/264932/percentage-americans-own-guns.aspx
• https://en.wikipedia.org/wiki/Percentofhouseholdswithgunsbycountry

The question to answer is why does the USA have twice the gun ownership of the second place country.