ok so i'm really confused about what happened in this dream so i dont know where this post should be, but i need some help.

So Dr.Laberge says that the things you see in your dreams cant be recreated quickly when you close your eyes or look away, so when you do reality checks in real life if you look at a clock then look away, the time will be the same. In a dream, the numbers will change right?

I had a terrible dream where i killed one of my best friends in a fight,
which triggered me to say "Theres no way i would kill my best friend this HAS to be a dream". I put my hands over my eyes for about 5 seconds in my dream and try to wake up, but when i removed my hands I was still there in my dream. This is when i really believed i was awake because i passed this reality check in a dream! i tried multiple times to wake up and i couldnt..
what happened??