I did not vote on "witchcraft" because I'm unclear on what the term means to the OP and would appreciate some form of clarification.
I also declined on the issue of possession and exorcism; possession because I see it more a question of influence than any form of out-right "takeover", and exorcism because, at least as it's practiced to the best of my knowledge, it's a religious exercise, and I believe that most (if not all: haven't done an exhaustive survey) religions have a poor grasp of spirit and its influence on the material. Buddhism is probably the closest to align with my experience and beliefs in the overlaps and distinctions between mind, body and spirit, but am unaware of any Buddhist exorcism practices: I could easily be wrong here and haven't researched that subject prior to this post.
I have posted previously (more than once in the last month) regarding my personal experiences in OTB NDE so will not repeat them here.
The house I lived in from the ages of 10 through 18 had genuine spirit activity, though if it was of a ghostly or more of a poltergeist-type activity based on the projection of emotion made manifest by living entities will never be/can never be properly explained. I will say that I visited the house several years after we left and was let in because the then-current owner was a sister of a classmate of mine in HS who recognized my name (and, eventually my face as well); in response to a very simple question regarding whether or not she'd experienced anything unusual in the house, she broke into tears and began reciting a litany of the same issues we'd experienced while living there.
As to the question of alien abduction, no lesser a mind that
John Mack, a Harvard professor, went from dismissive to skeptic to understanding eventually, that something is happening on both a psychological and verifiably physical manner that defies rational explanation in otherwise healthy (mentally and physically) individuals. He was a close friend of one of my very good friends, though, to my regret, I never got a chance to meet him before he died.
I've had some very odd things happen to me regarding "aliens" that are difficult to explain except as hallucinations, but how and why would a young child with no knowledge of the experience (I was under the age of seven in both examples that I remember most clearly); later events in my adulthood can (perhaps) be explained as such. At no time, however, have I ever experienced a typical encounter, no do I ever recall consciously
seeing anything not obviously terrestrial, FWIW, and I distrust hypnotic regression as a tool to uncovering buried/suppressed memories, so I've never pursued it.
Yeti and other "wildman" legends could be any number of things, though I cannot discount the possibility that there's some type of ape that exists in minuscule numbers but which does, in fact, exist. Gorillas were considered imaginary until one was finally located in the 19th century (again: too lazy to properly research and link, but that is a commonly-known fact).
Homo floresiensis would have been considered mythological up until the moment they were discovered, too.
For reasons of privacy and an unwillingness to discuss the specifics, I clicked on to the other poll options, too