What is the meaning in a dream of pyramid

I dreamed i was in an ancient Egyptian pyramid and the walls were full of drawings and glittering gold, my mother was standing with me while i was about to wear the costume of a goddess with wings, i saw myself in the place of the statue while wearing the wing, the wings angles were pointed downwards and rose to the middle ( i noted that for some reason )

I remember a little bit of a nightmare the reoccurred only twice (I’ve only ever had it twice, wasn’t sure how reoccured would be used here). The only little bits I remember are that I was with all my cousins on my mom’s side and that it took place in a haunted house. I remember walking across this hallway but the view had zoomed out and I could see through the wall. While the view was zoomed out I could see two massive dog heads barking (like a cerberus type thing) over top of the house. Then we climbed up a rope ladder (like the ones in the FMS swimming pool) and arrived in a massive room. In the far corner of the room was a pyramid type thing made of wood. The pyramid was much closer to a Aztec on then a Egyptian one in design. Then I remember turning around hearing a scream and something coming out of the trap door. It had a similar color to the creatures from the moon in Destiny 2 (oddly I’d not played the game at this point yet, barely knew it existed)

So I used to have a 20x15 above ground pool at my dads that we built a deck around from the back porch of the house so it was easy access. But in my dream it was underground and inside the garage for some reason. And the whole time there's just a bunch of random people I don't know swimming and we're all having a good time. Some people made a human pyramid in the pool and others kept pushing them down. Then all of a sudden the pool filled with like dirt where you couldn't see the bottom anymore and someone is screaming that there is a 6 year old missing so I started to freak out because I was almost certain the kid drowned and it was too late cause he/she was missing for a while. So I ran to find my dad to make him drain the pool and he was taking forever to get out there. He wasn't taking it seriously at all. I was the only one who was. When I ran back out to the pool my dad and stepmom were already there casually draining the pool and the dirt cleared out and I saw the kid. And my stepmom very casually said "it's Skylar". (Skylar is my bio sister) Like wasn't worried or anything that she is stuck at the bottom of the pool. But for some reason. My sister was only 6. It was the 6 year old version of her and she just turned 19 this year. It didn't make sense to me at all cause I was still 21. So I tried jumpin in the pool to grab her but all of a sudden I was 8 again and I couldn't make it to the bottom because it was 12ft deep. And that was before I could reach it... right after I jumped in and couldn’t reach her I woke up