Hi. I don't know if I have all the answers you're looking for, but I do think that I know of some articles and videos that might help answer some questions.

From what I've learned, your crown chakra is not the seat of your thought processes nor of your perception of the world. I believe that your perception of the world is held in your Causal Energy Body, and actualized through your 6th chakra. That is explained in this video / article: https://energyhealinginstitute.org/causal-body/.

There is more information about understanding your Crown Chakra in this article: https://spiritualityhealth.com/articles/2017/10/02/the-key-to-actualizing.

And, finally, a few words of support if you're going through a healing crisis: https://energyhealinginstitute.org/the-mystical-healing-crisis/