2. The light is relatively sufficient during the nap. If you are really tired, you will dream. The shape of the dream may be different from that in the morning, such as more colorful and more distant content.
3. About the content: The most likely situation is that you have recently felt some competitive pressure, especially in interpersonal relationships, and you may have a certain degree of insecurity. You wish you had a way to hit your opponent quietly. If I have to guess more, I bet that you were once outstanding and admired in some aspects, but you haven't used it or shown it in recent competitions for the time being. Of course, this is a guess, not completely sure.
Dreams are subconscious expressions, especially the realization of subconscious wishes, but the way of realization is disguised. As far as the information given so far is concerned, it can only explain these. Don't worry, it certainly doesn't predict anything, because dreams don't have that function.