I suppose this is why the mind palace of memory is difficult for me to utilize.

I have read that eskimos lost in the snow and ice have been able to have day hallucinations visually as well auditory. They see and hear birds which do not exist.

A YouTuber simulated it with thick white paper taped to his head with white noise playing head phones after 15-30min, iirc.

Another avenue to look into aside from hallucinogens as referenced in the link could be deep meditation.