nah its possible. a youtuber hung himself unconcious a few years back, he was doing a skit were he put a belt around his neck atatched it to a pull up bar you put on a door frame and them flailed like dramatic suicide but he did it too long and passed out, his gf found him shortly after and undid the belt etc, n that was just by accident i imagine it would be even easier if you wanted to die and were alone