Uhh, dude. You seem to be as confused about BBT as many evolutionists are.
BBT is essentially a restating of Genesis 1:1. Suddenly, the Universe and Time came into existence from nothing.
BBT says nothing at all about what caused the Universe to come into being. It is entirely compatible with the Bible's account.
I agree. You are correct.
“let there be light. . .” = instantaneous creation = Big Bang.