Well, wishes are weird in their own way! Wishes are simply just that- wishes! You wish for something to happy, but the physical world can't be changed like you may think! So, let's say you wanted your hair to be purple, or to find a million dollars, or to have your school to be cancelled for a day- Wishes don't really work like that. They can't change the things I listed above, but wishes can give you an edge on things such as luck and fortune. For example, if you wished and chanted for good luck, it may just come true because luck tends to change the physical world/outcomes of things without directly changing something.
I hope this helped!
Bless be :)