If we assume that the consciousness has a material basis and neurons/ atoms do not disappear anywhere after death, then the configurations of space will forever be repeated again and again. Endlessly recombine in all conceivable and unthinkable states, even in another universe. In eternity everything is possible an infinite number of times, even the unthinkable. Reincarnation certainly exists, but it works beyond the moral narrative, even beyond anthropocentrism as the man at the center of the universe. The infinite recombinator of all conceivable and unthinkable forms. Consciousness will be everywhere, in every point of the universe one day. It is immortal, but at the same time the universe resembles a prison of "souls", for no one ever sees eternal peace. The last sentence gives notes of gnosticism, but still does not build to multiply the divine without need and objective perception of reality.
Something like this was meant by Friedrich Nietzsche in his idea of eternal return, he came close to this idea, but still he was primarily concerned with accepting his destiny and all adversity with all suffering forever in order to become a superhuman.
Buddhism and all the quasi-religious currents that see the world as a cycle have one serious ontological problem, that they are too much in the direction of anthropocentrism and moral narrative. They do not consider reincarnation outside the discourse of morality and anthropocentrism, which afflicts almost all metaphysics up to the invention of posthumanism in terms of criticism of human exceptionalism. There is another problem, they rely too much on the transcendent, which is just a plug to describe what I do not know and can not describe.
There is also a critique of this approach, that the universe is finite, and one single. Consciousness lives one moment, then dies forever. The universe reaches near-zero entropy, the thermal death of the universe, and nothing will ever happen again. Nevertheless, the big bang came out of nothing, at least for now science thinks so, which means that it is quite likely that the universe can arise again, an infinite number of times, perhaps not even like us, or they may exist in parallel, that hints at the multiverse theory.
There is an even more subtle problem, which is the problem of temporality and the time limit in general. We can roughly say that time is a social construct, or even more precisely a thought construct. The theory of relativity has cast doubt on the conventional concept of time, that when moving faster time slows down for observers, and for those who went to another solar system accelerates. the twin paradox. In classical mechanics everything is simple and clear, when on macro scales everything is more complex, and because of the limitations of language and logic.
The main thing that should be understood is that linear time must be questioned, and in all sorts of metaphysics it is not necessary to depart from it. This is also a kind of anthropocentrism and centrism, although rather time-centrism, because it is easier to perceive reality than to recognize that all the crazy forms of all possible forms exist outside time, even outside space. We cannot think things outside of three dimensional spaces, we can only partially touch it through mathematics, which nevertheless has a practical use in machine learning, for example. At least these universes exist in virtual space, and between them there is no difference between in real life and the virtual world in computer simulation.
Consciousness can "reincarnate" into anything, an infinite number of times, even outside the standard paradigm of thinking, simplified and maximally understood. This is in some way scary to admit, but surely something similar is and without resorting to total metaphysical entities