I believe that scientists have tried to come up with random number generators based on all sorts of properties such as Brownian motion, small fluctuations in heat or electricity in some sort of filament, etc.
But when some other scientist looked at one of these contraptions, they always found some pattern that made it not completely random.
So it might be that the universe is constructed in such a way that complete pure randomness is impossible.
And the fact that the universe is still here after what we believe to be billions of years of existence, might suggest that whatever patterns guide the universe, non-existence is not included.
Pure randomness would mean that we could never exclude the possibility that everything would end in the blink of an eye.
But if every quasi-random phenomenon has to have at least a smidgeon of a pattern to it, then it might be that there is no way to completely annihilate the universe.
And if you consider the universe made of information, the posiition or reference of “no information” or null information is information regardless, and you could never put yourself or be in a non-informational state. Hence, all sorts of stuff.