As others have said, the probability of a dual engine failure is extremely unlikely. Extremely. When it happens it’s so unusual that it’s big news and skews our perception of the likelihood.
I notice you refer to the fear of the event though. Does this preoccupy your mind when taking off? Could this be a distraction which causes you to make mistakes? If so I would recommend speaking to a psychologist who can help you to understand why this preoccupies you and how to let it go. There’s no shame in it and it could make a big difference.