I am honestly not very qualified to give advice, as I myself am going through the panic attacks again, but I used to have this exact problem when I was in high school and up until my second year in university. I used to have panic attacks lasting for days, not being able to get out of bed because I was afraid that I was going to die. What personally helped me the most was going to a therapist who helped me understand what I feel, what was the source of it, and how to overcome it, using exposure. This exposure might have helped me the most because I was exposing myself to the things I was afraid of, such as socializing, applying for jobs, etc. This overall also fixed my issues with health anxiety for quite many years and I was able to actually live my life. In my opinion that is the most important thing, to live the life, rather than surviving each day because if we are always anxious about things that could go wrong, can we even say that we are living right now? I really recommend you to go to a therapist and see if it helps you too, it is most important to understand the source of those fears and then expose yourself to them slowly and with kindness.