
In my opinion and from the things I have read in this manhwa, the title is cheating men must die but almost every world, every story the host came in and change the plot. All she did was to beat up the fake heroines but only few times happen when she beat cheater mens. Wouldn't it be better if the title is "Bitches must die?"

Well...there's more than one way to kill a person. The MC kills not only physically but mentally and spiritually as well, depending on the person and the circumstances. You can think of it as her getting retribution against her host bodys' enemies.
I'll even make you a list of the people she got even with and how just because I'm bored and free for the rest of the day.
ヾ(☆▽☆)

Its just from my own point of view but it seems the reason Elenora doesn't choose Alejandro is because of his too much excessive obsession to love. Like he's willing to become a Yandere just to keep his love sole for him. Ik the reason of this was because of his childhood but still. Isn't he a bit too much?
Remember that guy got infected by a virus in his territory maybe the guy our MC talking right now is a different person. I wonder if he's a demon lord or a dark wizard? I'm so curious.. maybe it will be like Athy x Lucas someday.