FWIW, the hidden-variable theory, that the universe is deterministic and we just lack all information to predict it, has been considered and rejected by physicists.
While that is a pretty good 'laymans' description of Bell's theory, I do find it quite funny that step 3 of their proof that randomness exists requires you to "choose 2 random numbers".
https://www.askamathematician.com/2009/12/q-do-physicists-re... https://en.wikipedia.org/wiki/Hidden-variable_theory