While it is not a really hard thing to understand, requiring only high school math, writing it out entirely here is going to be a bit laborious.
I can really recommend this book: "Dance of the Photons: From Einstein to Quantum Teleportation" by Anton Zeilinger. I read it when I was 16 and it's easy to read, but might shake to the foundations your understanding of the universe (as it did with mine). It clearly lays out why the position you take in your post is hard to maintain given some very simple experiments, even though your position looks so intuitive.
I can really recommend this book: "Dance of the Photons: From Einstein to Quantum Teleportation" by Anton Zeilinger. I read it when I was 16 and it's easy to read, but might shake to the foundations your understanding of the universe (as it did with mine). It clearly lays out why the position you take in your post is hard to maintain given some very simple experiments, even though your position looks so intuitive.
If not, this video gives a quick sketch of the argument and the experiment: https://youtu.be/f72whGQ31Wg?t=361