I don’t think I’ve seen it mentioned in this thread so far, so I may suggest: Some nature documentaries, particularly more recent ones, can be pretty scary, and beutufulaa and intresting too, but also scary (and not particularly gory, that’s nit generally the focus) . Dread/state-of-tge-climate sort of scary, among others, and no less scary for that I think. Nature documentary movies.

Some hosted by Netflix, are free on their yt cahnnel, i think.