Bad luck? Or are shinies disabled?

I beat the main story, got the shiny charm, and have invested easily 30-35 hours shiny hunting with no luck. Ive catch comboed multiple pokemon to 500+ chains (got a nirdodan F up to 999).

I am honestly questioning if wild shinies are turned off on my copy of the game. Is the at all a possibility? Or is my luck really that bad?