Let's start with something positive: the film looks good and the cinematography is more than competent. That said...
The actors are not to blame, especially given the terrible characters and dialog they were given, for "Deep Hatred", A more appropriate title would have been "Goofus & Gallant: The Horror Movie"
Gallant fixes the flat tire while Goofus flirts with his girlfriend.
Gallant & GF worry about the moldy smell of the house while Goofus & GF jump into a clean-as-whistle pool at an abandoned house.
Gallant hugs his girlfriend while Goofus has sex in the pool.
Gallant cleans the house while Goofus has sex with his GF.
Gallant investigations the spookiness of the house while Goofus surreptitiously and salaciously snaps pool pics of Gallant's GF (who is Goofus' childhood friend).
Gallant's GF is blonde and wears white while Goofus's GF is raven-haired and wears black (and talks FOREIGN-y!).
Gallant has brought a ring with which to propose to his not-longtime GF, while Goofus derides the ring and his intention, unaware that HIS long-time girlfriend has decided HE is overdue to propose.
Somewhere during all of this, the Elder Couple visits and gives them a Mysterious Warning not to go out at night (close up on hedonistic couple). "What do you mean?" -- "Bye, kids!"
There are spooky stickman not-scarecrows all about, giving the impression they are at The Blair Witch's summer place.
Wait, was that something in the bathroom mirror behind her?! Is there a person under those crumpled bedsheets? Does The Water contain Evil?
There's more, but you get the idea. If AIs start being used to write horror movies, films like "Deep Hatred" will be the cause, since it already seemed composed entirely of algorithmically compiled tropes.