I think this is a bit of a simplistic solution though. Most rapes and murders of women are not caused by the Wayne Couzens types. Rapists and murderers are not people who have never been taught that it's wrong to rape and murder, they're typically people who feel entitled to someone else's attention, love and body. I've not checked, but I'd have a guess that the vast majority of those killers since Couzens was caught are jilted or jealous husbands, boyfriends or prospective boyfriends. You see it in absolutely every culture around the world. And obviously women are just as capable of being jealous and controlling in a relationship, but it's kinda like comparing a chihuahua and a pitbull. Yeah, both are capable of going crazy and biting you, but one of them is a far bigger issue.
So I guess my point is that it's not enough to say "don't rape," the key things are firstly a cultural shift to change the attitudes that cause this jealous and controlling behaviour, as well as that "any hole's a goal" attitude that men in groups often have, (even if they don't really believe it or act on it, they often perpetuate it, covering for men who do). I remember being in nightclubs in my late teens and seeing obviously hammered women being surrounded by men who saw her as an easy shag basically because she didn't know what she was doing, and then having to be led home by her friends, basically to avoid getting raped by a man who would have no doubt not considered it rape. It's not a 0.0001% that some suggest. It's shitloads of men who think this way, or at least did when I was a youngster, which wasn't so long ago.
But failing that cultural shift, massive investment in the sorts of things that allow women (and men) in such a situation to be protected. So that's things like women's shelters, restraining orders, etc. And yes, more police too, despite their many recent failings. But all of this stuff costs money, which is why it doesn't happen.