I'm really trying hard to not get all rage-y here but I honestly found A Ghost Story (2017) more frustrating than scary. (And I say this as someone who also has had to deal with the long journey of grief over the passing of a loved one.) One scene with C's ghost in the house made me feel like he was being way too much of a dick (but I guess being dead does that to you), and one scene with M was way too long, almost at an absurd level. And one major plot point was horribly mishandled, to the point of cliché.
That said, there's a powerful story here about loss, grief, and the (im)permanence of life, especially shown in a powerful sequence near the end. It certainly wasn't a film for me, but despite the sheer anger I felt after seeing it, I can still appreciate it for what it is.