How do you say have a wonderful day in french?

Est-ce que tu vas à la bibliothèque? pourquoi? (2 points)

Iaccidentally clicked an answer for number 3 i don’t know if it was right or wrong but i can’t go back it won’t allow me. sooo here’s the 4th question‼️‼️‼️‼️‼️

How do i remember the french words i learn? i mean i can read it and understand it but when trying to talk in the language i struggle to spell it. or use it in the right context.