Women attempt suicide more than men. Men are just more successful at it because they tend to use more violent methods, mostly accounted for by using firearms (whereas women try using drugs and poisons). The disparity between men dying of suicide and women has not been linked in any way to greater or lesser “mental strength.”
Women try to kill themselves more often. Men just succeed at it at a far higher rate. I am not real fond of even having to debate that because I don’t consider suicides to be “weak minded people,” but under your own declared terms, your conclusion is wrong: https://save.org/about-suicide/suicide-facts/