I played pokemmo for a long time in the past and couldnt find any. Then I came back after a few years of break and got 4 or 5 within 4 weeks.
Its all just luck and rng, just keep trying
don't know, if it already exists. but I dont think so
a special bgm if a wild shiny appears would be cool, something like a song of this vid
it reduces the risc that you kill a shiny while brain afk farming, if you dont notice the name or color
and its always an adrenalin kick =0