What is the meaning in a dream of drowning

I saw Lord Krishna and arjun and drowning dwarka in dream

I dreamed about me and my class going on a field trip to an island. We reached our destination and went inside a dark buidling. I'm not sure, but our teacher disappeared. Me and my classmates saw a white figure in the darkness. We didn't think any of it and walked up stairs. Some time passed and I decided to go back down with a friend until he got stabbed by a very long katana. The katana stabbed him in the eye. Then I heard Jeff the Killer say, "I don't want his eyes, I want yours!" I wanted to run out, but he was killing everyone down there. I gave up and lied on the floor. I heard him approaching, then I thought of God and I think God magically gave my strength and courage. I got up in time, and threw Jeff onto my shoulder, he dropped his katana. I ran outside, stabber him with his sword, and buried the tip of the sword into the water, drowning Jeff. I ran to the back of the building, swimming away. The other side was far. I struggled against the waves. Then someone helped me. I got back ashore safely. Yet, I couldn't recall if that 'Jeff' was him, or Nina the killer..

Baby bird trying to fly and drowning