Iphone Virus

Hi! I have an Iphone 11 and I think it has a virus, I have been doing some research and i know its rare but i think my phone has a virus. random thing open and close on my phone, it always says my storage is full when I know its not, my internet wont work and i get a ton of notifications in my calendar saying I have a virus and I need to get rid of it imediatly. I am afraid people have access to my personal information and my camera. I have no idea how to fix this so please if u can help me let me know.