Also, knowing quite a few of this kind of videos, I can share with you some of the best ones I saw. Please understand that none of this vids is real murder.

https://www.heavy-r.com/video/349649/Deadly_Interrogation_II/ - pretty gory torture. You can search "deadly interrogation" on motherless or heavy-r to find other videos from this series, they are all gory.

https://biqle.ru/watch/22214035_160845234 - well, nice music :D

https://motherless.com/GDFB3C0E/872B764 - I just like this girl, Keeley, there is a whole collection with her:
https://motherless.com/GDFB3C0E

https://motherless.com/D8EB79F - I like this one because the girl is pretty cute

https://motherless.com/5BD63F3 - nice vid in the middle by ChokeChamber. This user also has some interesting compilations.

https://motherless.com/g/simulated_snuff/3EF0E60 - It's the famous Charley Atwell!

https://motherless.com/903BE2D
https://motherless.com/79A1253 - and this is Sasha Grey!

https://ru.spankbang.com/3agql/video/necrophilia - found it recently, looks pretty nice

https://motherless.com/4815DDE - I dunno, just a nice little vid

There was a lot of vids taken down by the copyright holders, such as this picture, so I can't find the links.