Here are some other ways to say hello in French, depending on the context:
* Bonjour: Good morning/good day (formal)
* Bonsoir: Good evening (formal)
* Bonne journée: Have a good day (formal)
* Bonne soirée: Have a good evening (formal)
* Coucou: Hi, hey (informal and friendly)
You can also use "Salut" as a way to say goodbye, similar to "bye" or "see ya" in English.
Keep in mind that the best greeting to use depends on the situation and the person you're talking to.