Basically, many-worlds proposes the idea that the quantum system doesn't actually decide. Rather, that at every junction where large everyday stuff interacts with the quantum system, the timeline of history splits and both possibilities happen on different alternate branches.

Both many worlds and wave function collapse are equally shoehorned at this point in time. Both are interpretations precisely because they are not factually supported, but are narratives imposed on top of empirically observed reality to suppose how it may happen.

The idea that the universe splits into multiple realities with every measurement has become an increasingly popular proposed solution to the mysteries of quantum mechanics.