What ff(on end of universes???)

What if the density of matter in our universe is the clue to how it will
end? Take galaxies that move so far apart that their mutual gravity
can't balance out expansion.If it was strong enough we would have a
"closed" universe and one day recolapse in on itself. collapse
could create expanding forever at a slower pace forever. My scenario is
this "The universe will expand at an ever faster expanding rate" It is
thinning out as I type. In a trillion trillion trillion trillion
trillion years from now it will have to be considered empty. Well
I posted 3 ways of endng with our todays knowlege,and there coud be more
universe endings as humankind gets smarter. TreBert