If said in the wrong tone, this phrase can be interpreted as sarcasm. So make sure that the person understands your sincerity when you express the sentiment.
[header] How to wish someone good luck [title] Keep it simple-say' good luck! [step] " one of the best and simplest ways to wish someone luck is use that very phrase. " good luck! " is straightforward, heartfelt, and almost impossible to get wrong. [substeps] Make sure that you sound sincere.