According to https://gunviolencearchive.org over 50% of every gun death in the USA each year is from suicide. More than half. Nobody gives a shit because while the numbers are staggering, they're not kids in school or people in a theater, mall, or grocery store. They're still dead though.
Gun ranges won't let you rent a gun unless you: 1) Have someone with you 2) Have another gun with you (and clearly you just want to rent their gun to try out a different gun) because they're afraid (almost certainly through experience) that you'll kill yourself.
This nation not only doesn't give a shit, it gives even less of a shit now as seen in this article.