Black holes create a hole into the outsides of the universe, where there is either unlimited, or limited energy. Once it goes into it, it turns into dark energy. After turning it into dark energy, it goes into the universe by a worm hole. Worm holes then would release dark energy into space. It is impossible to go into a worm hole, it can only throw energy out, while black holes can only throw energy in. While this happens, the universe never ends, only gets bigger, because black holes can only take in so much before collapsing. Worm holes can come anytime for a certain amount of time. At that time a certain amount of dark energy could be expelled. Basically recycling the universe. But black holes can only do so much, so after a point it stops. At that point the universe collects more than it expels, thus making it grow. This would mean that the universe would never grow. If energy were limited, then it would stop the universe from growing any bigger, and then stop there, never getting bigger or smaller since it is recycled. So after the energy from outside is gone if limited, then the universe would expand or collapse to a certain size, depending on the black holes and worm holes that are out in the universe. From dark energy, it would later be converted to something in the universe, such as Molecular cloud which creates sun, which makes elements, which then dies later creating a black hole and the whole process starts over.
Instead of energy could the universe be multiple instead? Creating more and more universe in ours, but not in matter, something we cannot see. Such as, if we went back in time to do the same thing we did before, it would be different. The choices could be unlimited, never ending due to multiple universes in our universe, maybe a multiverse