How To Get A Shiny Pokemon On Emerald How Come I Can't Catch A Shiny Pokemon? {PKMN Emerald}?

How come I can't catch a shiny pokemon? {PKMN Emerald}? - how to get a shiny pokemon on emerald

You need more than one person, if I do not shiny pokemon. I used an accidentally deleted bright but Walrein ... that the only bright spot that I had. Where can I get? You can reduce your pleasure to tell me what Shiny Pokemon you have and where have you taken?
I'm talking about Pokemon Emerald.