- Thanks to everyone to give me a chance to say something in front of you.
- Thanks to everyone to give me a chance to say something before you.
Do you think that the sentences stated above mean same thing?
Do you think that the sentences stated above mean same thing?
Generally speaking 'in front of' refers to position in space and 'before' position in time (though there are obvious exceptions).
The second example would apply when the people have given you the chance to speak before they themselves spoke. The first example would be thanking them for letting you speak whilst standing (or sitting) in front of them.
The structure of the whole sentence is a bit off though. Try this:
Before in everyday Modern English only refers to time. Using it for space is literary or archaic.