The cult of the wendigo

You are the wendigo, once human but you separated from society unable to handle the tyranny of the governments. You ate bad people and turned into a wendigo, living in the swamp in the cabin you made, barely clinging to sanity and struggling with loneliness you discover the world ended a long while ago, now your in the post-apocalypse and must navigate this strangely more welcoming new world while struggling with identity.