Book publishing or a peer review journal
Publishing a book is not that hard, but getting people to read it is. Publishing in a journal would work, but based on the description of what you're going to write about, it seems unlikely that any reputable journal will publish it.

I'd say first get some confirmation from an expert that your ideas are correct. Try talking to Sabine Hossenfelder (costs $50 for 20 minutes, which will still be cheaper than self-publishing a book). If she says your ideas are credible, then ask her how to publish them.