For whatever else it's worth, I never said *how* I had tried to kill myself. I never set myself on fire or shot myself in the head; as I said, "probably"--and I mean very probably--what I did simply didn't do the job.
Even so, having moved mostly past my suicidal ideation (a recurring problem for me, but one my religious beliefs have helped me overcome better than before), I am not currently interested in testing whether more extreme forms of self-harm would accomplish what I failed to accomplish before. My point now is just epistemic.
I think the most honest response, for the average even scientifically-informed person, to the question, "Does our consciousness cease when our bodies stop moving of their own accord?" is: how would I know? There's nothing we can infer an answer from, at least if we're to be deductively valid about the inference. And no inductive inference, from our perception of other people's perception (which we don't even directly see!) ceasing or not ceasing on death, or from perception of our own death, is available. That leaves us more or less with just an inference-to-the-best-explanation, but whether, "Consciousness permanently ceases when the brain permanently ceases to operate," is not, as far as I am aware, a good explanation for anything.