almost all saw movies are really good, save for like any between 5 and Jigsaw. One I really liked was Saw X, although its more recent and not super super horror based but still rly good
Hellraiser 1 and 2 are pretty good, but from what Ive heard the rest arent as good
some REALLY good ones like personal faves, gotta be GET OUT, NOPE, literslly any jordan peele movie is good. War of the Worlds is also really good, and def scary at parts. And a longstanding enduring classic has to be Blair Witch Project.
BONUS SECTION - I know u asked for games on a liw end pc before, but if you ever wanna see some really scary and fucked ip horror games, play/watch Alien: Isolation (my FAVORITE horror game if all time), and the Blair Witch GAME, both are amazing for their time and genuinely terrify me today.