My layman interpretation of universe paradoxes

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~big bang must have only been formed in one of two ways; one way is by a random quantum fluctuation so you get a universe from nothing. The other way is from a black hole in another universe reaching critical density.

~ particles don't actually pop in and out of existence, they just select a location on the wave function upon being observed.

~gravity is the only thing from our universe that derives from the 5th dimension (hyperspace)

~there is more outside our universe, our universe is clearly expanding into something, it's expanding into hyper space.

Thoughts?