98% of the universe is made up of only 2 chemical elements. Only 25% of the known chemical elements can be created inside a star. Where did the other 75% elements we see on Earth come from? What are we humans finally made of?

Do we live in a multiverse, a place (I am calling it place since I dont have any other word for it) where universes are continuosly being born and dying like the bubbles of water?