Unsimulated sex in movies

[Kacper]

Hey, I was wondering if it was possible for actors (teens) to have unsimulated sex in movies (real movies not porn). To my surprise it's possible and even pretty common. Do you heard anything about this or even know some movies that contain such scenes?
I have 3 movies:
- Tenemos la carne (2016) https://vk.com/video225449103_456239030
- Wij 2018 https://ok.ru/video/1459244632590
- L'amant / the LOVER [1992] https://vk.com/video95388369_168163764