IMO, It's not a lack of awareness that keeps those contemplating suicide from asking for help, it's that huge dark crevasse that exists between knowing you are in an existential crisis and feeling capable of reaching out.
Some people will never find it possible to scream out for a lifeline.
During dark times in my life, I've been able to convince myself that I could always do it "tomorrow."
Whether it was part of some great plan, or just the benefits of waking up to a new day, it was a weird kind of self-care strategy that kept me alive.
JMO.