Most languages luxuriate in excess.
Even in English, there are:
Hip borrowings. Like 'ciao'.
Friendly informalities. Like 'bye' (short for goodbye). Or 'see ya' (short for 'see you soon' but meaning 'see you whenever'). Or 'cheers' (a mix of 'thanks' and 'acknowledging our interaction is over')
Friendly but literal. 'See you later', meaning later that ...