Why is Fire Super Effective against Fairy in Sword?

I recently played Pokemon Sword and when I use fire type moves on fairy types it says it’s super effective. According to the current facts it’s not supposed to be super effective but just regular effective.

Pleaselog inorregisterto add a comment.

Fire is super effective against Grass, Steel, and Bug. It is not super effective against Fairy types. Which means the Pokemon you used the fire move on had to be a Grass/Fairy, Bug/Fairy, Steel/Fairy, or Ice/Fairy type. The Pokemon you used the Fire move on could also have been affected by Forest’s Curse.

Grass/Fairytypes:

WhimsicottCottoneeTapu BuluMorelullShiinotic

Bug/Fairytypes:

CutieflyRibombee

Steel/Fairytypes:

MawileZacian-CrownedKlefkiMagearna

Ice/Fairytypes:

Alolan Ninetales

Source

There is no way a Fire type move would hit a Fairy type Pokemon super effectively untill their second typing was weak to fire.In Sword

CutieflyRibombeeKlefkiCottoneeWhimsicottMawileMorelullShiinoticMagearnaZacian-Crowned

Fairy types which are weak to Fire in Pokemon Sword are the Pokemons listed above.They have Steel,Bug,Grass as their second typing which makes them weak to Fire

If thePokemon you encountered is from the above list then it might be due the Pokemons secondary typing if not then you may be Wrong

Source:Sword Dex