To be a hero, an otherworldly journey of an isekaid soldier

Death, impotence, and suffering, after living through this would you take an offer of becoming a "hero"? Can broken souls create healthy times? when a Mexican soldier saw himself against this question he knew deep inside the answer as a world of beasts, magic, elves, and demons unfolded before him. Author notes: this is a personal project, I would love feedback but I am not good at writing nor have much free time to write hence time between chapters might vary. I am trying to pick the known trope of humans isekaid to a fantasy world where they would become heroes but I will give it my all to create a complex and mature story worth reading with this common trope.