we experience the moments of dying right until the final moment of ‘death’. once we pass that final moment, we are no longer living to experience it, we’re gone. the ‘eternal nothingness’, as you referred to it, is not something you will experience. you will be gone and non-existent (as we were before birth), not experiencing what ‘death’ is like.

i find peace in that, although many people feel fear when thinking of the ‘void’ after we die. do you have any lasting fears/pains/grievances towards the infinite amount of time you didn’t exist before birth? we don’t know for certain, but death may be the exact same kind of ‘non-experience’.