The ? emoji generally means "crossed fingers" or "hoping for good luck". However, the interpretation of the emoji from a guy could depend on the context and the guy's intention. Here are some possible interpretations:
One possible interpretation is that the guy is expressing a wish or hope for something, and is sending the crossed fingers emoji as a way of expressing his optimism or belief that things will work out in a positive way.
Another possible interpretation is that the guy is trying to convey a sense of support or encouragement. The crossed fingers emoji can be seen as a way of showing solidarity with someone, or as a way of indicating that the guy is rooting for you or hoping for the best for you.
In some cases, the guy may be using the crossed fingers emoji in a more lighthearted or playful way. For example, he may be sending the emoji as a way of jokingly expressing his hope that something unlikely will happen, or as a way of expressing a sense of anticipation or excitement.
Overall, the meaning of the ? emoji from a guy can depend on the context and the guy's intention, but it generally suggests a positive and supportive tone, and may involve the ideas of hope, optimism, encouragement, or playful anticipation.