A couple of additions to this:
We need to tell all children (and all people) how to recognize an abusive/toxic relationship for what it is.
We need to recognize that if someone is in denial about the toxicity of their relationship and/or doesn't feel safe leaving it, all of the "Leave toxic relationships" advice in the world isn't going to help.
We need to provide emotional and material support to people in abusive relationships, so that it IS possible for them to leave safely.
We need to fix our damn rape culture, fight tooth and nail against the enforcement of rigid gender norms, and recognize how a disparity of power affects all relationships. And none of the previous items in this list are going to succeed if we don't do this.