Incantation (2022)
There are not many horror movies that are inspired or influenced by Buddhism. Although the small handful of them that I know about, I've enjoyed.
Incantation requires you to understand about about Eastern mysticism and ancestral worship. So long as you understand those two things you'll be able to make sense of it.
The found footage style Taiwanese film is a bit of an attempt at an interactive found footage experience. There's also several subtle plays at subliminal disturbances. Nothing particularly terrifying as a single thing, but things that just make you uncomfortable to see such as certain angles a scene is shot in, or props and pieces that while not particularly abnormal or grotesque are, creepy and unsettling.
The film did indeed remind me of my interest in and wanting to learn throat-singing, mantras and mudras.
If you shuffled Paranormal Activity with Ringu/The Ring together and added in a dash of creepy oriental Asian folklore, you'd get Incantation.
There are indeed some genuinely sad parts to the film as well, which is something that you don't really see that often in horror flicks anymore but it does actually do a great deal to set tone to atmosphere and imply severity and sincerity so that the viewer is more drawn into the experience.
Had I sat down and watched this in one continual go, I also probably would have enjoyed it much more than I already did. Unfortunately I ended up watching it over the course of a couple nights which did break up the immersion a bit, but that's honestly entirely on me.