Hopeless Wanderings

My first dream involved my long lost brother, who was in a school shooting(he was the shooter) and we were dealing with the consquences.
NOTE: this is at least my 3rd dream involving my "brother". In ever dream he has something tragic happen to him. Also note: I don't have a brother, and never have, but my dad was a sperm donor, so these dreams really make me wonder...

ok, so this LD lasted SO long, it felt like HOURS. But there was so much jumping around that sadly, I've already lost most of it.

I was in some place, realizing I was lucid, staring at the wall to stabilize. Then I spun to stabilize more, and that's where the adventures begin. I went outside and looked at the stars, they were so bright that I wanted to be in them, so I jumped up once, but failed to get anywhere, the second time I jumped up and I went so high, into the universe. The earth became small and I zoomed past constellations that were lit up and connected by lines so I could see. I was going far from earth, and I realized I didn't want to be stuck somewhere in space, so I flew back down so I could see earth, and decided to fly down to Bondi Beach, Australia.
what did I do then you ask? Well, I went in the water and started drowning so that one of the hot lifeguards from the tv show Bondi Rescue would save me! And sure enough, one of them came and rescued me, and it was epic. The things I did after that I either want to keep private or don't remember enough to tell, but the lucidity lasted A LONG time. I tried to remember my goals but failed on that part.

A student discovered a new planet, we were teleported there. It was bright and colorful and beautiful, but was also inhabited by some creatures that looked like people. "wow, so there IS life on other planets," I thought. At first we were being careful exploring this planet, and some of the creatures would try to attack us. A bunch of stuff happened that I don't remember and led to ME singing on stage with Christina Grimmie and, eventually, the queen of England joined in! Whaaaaaat. It was a great moment. We were all belting out "Let It Go" from Frozen.

I'm literally listening to sad music right now and it's making me want to cry because of this dream.
NOTE: I don't have a brother and never have had one.

I was in my old house with my mom, dad, and sis. We got the news that my brother had passed away, in something like a boating accident or military accident. I completely broke down and cried. I went into his room(his room was in the basement), looking around at his things. I wanted to find a shirt of his to wear, to smell of him and remember him, but I could not find one. I looked through all his drawers and I couldn't find a single shirt. I was desperate to find something, anything that reminded me of him, all while I was sobbing and falling apart.

This is the second dream I've had of my "brother" dying. Makes me think... did I have a brother in a past life or something? Why would I keep dreaming of him passing away?

<3 love you, brother.