Is there a name for this phenomenon?

Insanity

Ugh so relatable my dude.
I don’t hav3 an answe4 5hiugh, sorry.
Wha5 about not having good thought to word translation? That’s meee

yes, it's called growing up. It happens to all of us. When u get older, u realize the tooth fairy and the Easter bunny aren't real because your brain matter develops and u mature meer and meer as time passes. Don't worry, it's normal.