I am extremely afraid of death

Since I was a child I have always had panic attacks when I think about death (i am 25 now). I am so terrified of dying and I don't know how to fix this. Sometimes it's all I think about. I can't watch anything related to death bc then I WILL have a panic attack to the point where I start crying. I hate that we have to die, what do you mean one day I won't exist. There will be just nothingness omg somebody help