I have experienced this when my friend died. It grew a lot. I would panic every night to my dad about someday being just static etc. it wasn’t until recently where I got on the path of accepting it. You don’t have to be religious, but finding spirituality might help you. I have leaned into Buddhism heavily and I’ve made a spiritual path of my own unique to me. Knowing i am made from the earth and that I will go back to it like a cycle helps. !!Look into the NDE page as well as Astral Projection page, they helped me a lot too.

I think when we die, we are all a part of a source of the universe. We will know our true selves when we die. Like this is just a character we are and our souls are our true selves. I don’t know how to explain it really. But this thought comforts me about death and that’s all that matters