Sadly, the Rotten.com site fell into disrepair decades ago but it was fun while it lasted. It was mostly stills back then, of people with dreadful wounds or mangled corpses, unpleasant medical afflictions and some who'd had terrible accidents. I remember one had the heading 'Whoopsie at the train station' - the top half of some unfortunate's head was still above the platform in front of the train, at the end of a long stretch of blood where it had just been dragged along. The rest of the body was below the platform. Somewhere. Somehow.
My favorite MTV series wasn't Jackass, which I found rather tame and only occasionally gruesome and funny. The best was MTV Scarred, where mountain bikers, skateboarders and all kinds of precarious sportspeople were being filmed when they had really bad, bad, excruciating accidents. After the footage they showed their stunted limbs and heads with multiple screws and rods and whatnot and their X-rays. That show was a real cringer.
A few years ago a Zoom meeting at work was bombed by some weirdo or other. Before I could tell the host how to dump it the screen filled with various images of women apparently having sex with dogs and people having their heads blown off in shotgun executions. All in a repetitive loop and with a Jihadi sound track. It really traumatized some colleagues.
I loved Rotten.com and MTV Scarred, but that Zoom bomber leaves me with no desire to see this 'death' channel from the OP.