On the contrary. I believe the tools of violence are the only things that will allow us to protect lives.
Gun control has historically been used as a tool to oppress further those who resist oppression. You can see it today, every murder by the police is defended with “they reached for my gun” or “they had a gun”. The gun control laws you want will be enforced by the police and they will be enforced selectively against minorities. The atrocities you reference are almost universally committed by right wing straight white men. I can assure you no gun control will stop them from acquiring firearms.
There is an explicit example of this in Israel today. The settlers are allowed and encouraged to possess firearms while the Palestinians are explicitly disallowed.
It’s ahistoric to say that gun control will save lives. This country only implemented gun control when indigenous and black people began carrying firearms in self defense. Many black men concealed carried pistols to defend against lynchings which is how we have concealed carry restrictions. Because it became illegal to conceal carry, the lynchings continued. Atrocities continue.