I'm afraid that I will never get married
Why would you be scared of that? What scares you about it?
No one will be with me when I die
What makes you actually believe that marriage won't happen for you? Most adults manage to get married and you should be no exception to that rule. If you're really worried, then you should try spending more time pursuing relationships so that this doesn't stay as a problem for much longer.
I'm living in fear and I'm paranoid that I'll never find someone.
I understand your fear. I think it's a pretty common one so at least you are not alone. Put yourself out there and meet people!