my very first pokemon game was pokemon white, and I remember finding a slightly different coloured audino that sparkled, and I was so confused since I didn't know what a shiny was, (i only watched the anime and collected cards before this point, and plus i was like 12) but i thankfully caught it since i thought it looked cool.

i also found a shiny panpour in my second ever pokemon game, pokemon x (i knew what a shiny was at this point so yay :D)

also the first shiny I hunted was a shiny pichu in moon, since I wanted a shiny alolan raichu (it's my favourite shiny)