I had not realized it was about 100 years ago that Einstein developed his famous theories(110 for E=mc2 ). Here is a great article about Einstein with some good explanations for the non-genius: https://cosmosmagazine.com/physical-sciences/general-relativity-–-still-ahead-its-time What do you think about that?
I read Walter Isaacson’s biography of Einstein a few years ago. It helped me appreciate what he accomplished and how much it contributed to science and technology. I understood about 0.0032% of his theories, relatively speaking, but you do what you can.