Help me find this old story from 2000-2014

Hello, reddit!

I'm looking for this dystopian story i read online years ago, probably posted between 2000-2014. the MC is in this town surrounded by barbed wire and towers with guards who’ll shoot anyone trying to leave. the only way out is to "fight to the death," which is how both his parents died when he was a kid, around 5-ish. fast-forward now he’s in an arena trying to escape the town/city. he’s up against this old man and they’re both using these old, shitty knives while the crowd is going wild. just as he’s about to finish the old guy off, he hears a kid crying in the audience—the old man’s grandkid—and he basically sees himself in them.(+old man's family is alive and crying too, notably his daughter too) instead of killing the guy, the story ends with him raising his hands and plunging the knife into himself. does anyone have the link or know the title? it’s driving me crazy.