Hi Jon,
I went through a similar existential crisis. I have found answers. Rather detailed. If you want to know what is a “soul” or rather, what is “Reality”, what is “True”, I invite you to read these few articles:
Something to shake up your perception of what is “real”: https://medium.com/@marma.developer/my-spiritual-journey-3-the-nature-of-reality-abc06dc42c67
And something more spiritual in nature:
Of course, you’re welcome to explore the “my spiritual journey” series, but it’s quite lengthy, even more so than your article! :-)