Dreaming is actually a normal activity phenomenon of people's deep subconscious when they relax. Dreams are also related to the depth and posture of sleep. For example, if you sleep in a bad posture and oppress your heart, you may have nightmares of being chased.
The dream you are talking about looks strange, but it is actually similar to many people's dreams. It is a kind of wild attempt phenomenon of the subconscious mind (that is, the subconscious mind likes to break away from convention and dream incredible dreams in reality). There is no need to analyze it too deliberately.
Dreaming of the death of a loved one is also an experience that many people will have all their lives, but this does not mean that bad luck will happen.
If you still feel uneasy, I suggest you read the Bible, read a little every day, and then learn to pray. After you learn it, it will be very different. You will find special "security factors" around you to protect you.
If you have time, listen to Christian gospel testimony and do good deeds actively, you will get peace and happiness!