What does it mean when you have multiple dreams about your friends dying?
Dreams are about the dreamer, and dreams communicate through symbols. Friends seen in dreams usually represent aspects of the dreamer's own personality. Dreams often use death and dying as metaphors for dramatic change or transformation. Dying can represent the end of one phase of life and the beginning of something new. For example, a young person leaving home to attend university or enter the military might feel as if childhood is slipping away, along with familiar places, one's old habits, ways of doing things, etc. Dreams depict friends dying to symbolize the loss of so many familiar things.
Maybe that you're worried about them?