My shiny Dratini didn't evolve into a shiny Dragonair?

Question

My Dratini didn't evolve into what it was supposed to be, it just evolved into a normal one, and I was really excited about it. :\

Comments

Is it hacked? Or did you damage your game card?

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Are you positive it was shiny? In Gen 3, normal Dratini has more of a purple color than a blue color.
https://pokemondb.net/sprites/dratini

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He be like: and that’s why every Dratini I’ve caught, all 400+ of em have been shiny.

Answer 1

Unfortunately, yours was probably a regular Dratini and I'm not sure what extreme levels of save corruption could remove shininess unintentionally. I'm actually a personal victim of this, too. I didn't know about the shiny sparkles and thought the Dratini I found in Fire Red was shiny, but nope, I was wrong.

The one on the left is normal, and on the right is shiny. From top to bottom, you have Fire Red/Leaf Green, Heart Gold/Soul Silver, and Silver. I'm not really sure why Dratini is purple in the Generation 3 sprites, especially compared to Dragonair:

Are you sure yours was shiny? Shiny Pokemon sparkle after being sent out in battle in almost every single game.