This is probably one of the best movie movies about the possession theme, basically the story is about this little boy who seems to question his gender/sexuality while at the same time he seems to love his nanny, he idolize her, he even seems to want to BE her, and he end ups possessing her body, and using the fact that he is now inside her body to explore femininity without anyone talking anything about it, because "hell, he is a woman now". Honestly, even if you are not into TG/transformation, this is is honestly good to earth honest film.
Download link: https://archive.org/download/homebody_202204/Homebody%20Movie.mp4