Dying is a process, but death is not. Death is the end result of the process of dying. Death is not an alternate step, a process, a journey, a 'part of life', or any of the other action words people use to imply that death is a verb, or that death involves some lingering participation in being. No - death is the immediate, permanent and immutable status of non-being.

Human are afforded, by way of their ingenuity, the varied toolbox provided by modern medicine. Should they be lucky enough to predict their own encroaching death, they can utilize medical practices or substances aimed at delaying or numbing, respectively, the discomfort of dying. This is a luxury in a harsh world where most life is snuffed out, if not directly by the actions of humans themselves then by way of predators or disease.

I don't see the necessity to accept or normalize death as some non-terrifying thing; whatever pretty way you package it, it is a scary thing, and you are right to fear it. The reason it is a mental struggle to normalize death as an acceptable condition, or "process", is because you have thousands of years of hard-coded biological imperatives in your brain that inform you that it must be avoided at all costs.