It's called a Noose Knot. A stopper knot must be added as well. A Noose Knot + stopper knot combo can also be called an Arbor Knot.
This is how you tie it:
Noose Knot
Arbor Knot
What stands out to me is that you don't even mention pain or discomfort. Of course, you're panicking, because you know you're about to die. If you tried another method, you'd probably feel the same. Hanging is clearly not for you, because you always back out from partial before you pass out, and you're afraid to do full. (You explained this in the other thread, which got deleted for other reasons.) While it doesn't work for you, it can work for others – depends on the person, I guess. To be clear, I'm not discrediting your experience, and I'm not suggesting you're doing something wrong! All I'm saying is different methods work for different people.
It's certainly a possibility, but it's rare. Every research paper I've read says that permanent injuries, including neurological damage, are rare.
For example, look at this study (
link 1,
link 2), regarding neurological outcome:
Of the 886 patients (181 women and 705 men; median age, 43 years [34-52]), ... Median Glasgow Coma Scale (GCS) score was 3 [3 5] at ICU admission. Hanging induced cardiac arrest in 450/886 (50.8%) patients. Overall, 497/886 (56.1%) patients were alive at hospital discharge, including 479/497 (96.4%) with a favourable neuro-cognitive outcome (defined as a Glasgow Outcome Scale score of 4-5).
Or look at this study (
link) regarding cervical spine injuries, which is also based on a large sample size:
Injuries to the cervical vertebral with consequent spinal cord-brainstem injury is very unusual in suicidal hanging19 with the cervical spine remaining intact in most cases, despite popular belief.17,25,27,31
Those are just a couple of examples.
Injuries to the trachea or hyoid bone might happen, but those are neither life-threatening nor permanent. Statistics are more nuanced on those, and I don't want to make this comment too long, so I'll spare the details for now. In short, rope placement, hanging time, and age play a role in whether these injuries happen.