Can’t remember movie name??

I remember watching a horror film years ago. It wasn’t the best film but I’ve been wanted to rewatch. I only remember two scenes vaguely. One scene follows a soldier returning home and having sex in a motel with his girlfriend before he is murdered while buying her cookies from a vending machine. She is soon murdered after.

I remember another scene where a couple are killed while entering an abandoned theme park.

The vibes I remember from the movie were of a small town killer, possibly attacking people after an event from years prior. Hope someone can help! I watched on Netflix around 4-6 years ago I’d that helps