At first, please forgive me. I'm not good at English I searched on web about what is "Good luck to you" in French. So I found two sentence. One is "Bonne chance à vous" and another is "Bonne chance à vous tous". What is difference between the former and the latter? Or which sentence is more correct? I want to use this sentence to my roommate. But I don't know her well yet. please help me.