Have done it literally over 100 times over the past decade and a half and the only times I've seen shit that isn't there is basically in the dark on high doses.

Or when I've done a ridiculous cocktail involving LSD, mushrooms, MDMA, and MDA, but even then it's not like there's distinct animals or whatever. Stuff out of the corner of your eye, weird introspection trips that make it hard to tell if you're actually having the discussion you think you are, etc.

I've never been out of my mind to the point where I don't know what I'm doing or where I am while on hallucinogens.

That is the realm of dissociatives and FUCK dissociatives. Things like PCP or, something I was recently sold as LSD, a research chemical called MDB. Thought I was just doing LSD at a music festival, all of us that did it had bad, weird times traced back to it actually being MDB. Like six hours of memory loss. I thought I was in my tent asleep but apparently I was actually being chased through the campsite by my friends while I screamed nonsense about needing to go for a swim in the ocean. We were landlocked by hundreds of kilometers.