From a psychological point of view, death generally represents rebirth, and your dream also mentions borrowing another person's body to be reborn. This may mean that you are integrating yourself during this time, either as a whole or as a part, which symbolizes that you want to change yourself.
Most dreams are used to remind you of your psychological state or emotional feelings in recent days. I hope you can consider these two questions yourself, and I believe you will gain something.
Good wishes!