The Bible's too confusing and there's so many ways to interpret it

Yes, of course, I think books/ texts of the Bible have been destroyed or hidden. To me, that's like asking if there are Socratic texts that we don't know about, when practically everything we know about Socrates is second hand knowledge based on what Plato and Aristotle wrote about him.

I don't believe any of it.

Atheist.

at the suggestion of aliens.

Pretty much this.

Yes, most of us are familiar with Ancient Godliens. It's one of the best documentaries I've ever witnessed.

IDK. Doesn't matter to me though, since I believe that the Bible as is is enough to live a successful Christian lifestyle.