Astrally we are in a low realm compared to the Gods or other civilizations.
What was called "hell" is basically just the general "underworld", everything outside of the material realm, since "Satan" is the head of it, it's not a specific place but the whole astral and spiritual dimensions.
Translating this to Greek mythology, 'hell', the 'underworld' aka everything outside of the material is called Hades, which also have specific realms for souls on the lowest level of existence full of 'evil', for general souls, and heroic, higher level souls.
These there realms are called: Tartarus - the low level realm, Asphodel meadows - the average soul's realm, and Elysium fields - the higher level realm.
Just as souls can ascend to higher realms, and dimensions (there is probably more levels inside the 3 Greek realms, idk) the Earth itself can. So that's why I'm saying that "we", the Earth altogether is in a pretty low dimension, thanks to it's "evil" (non spiritual) inhabitants. But people's souls as well, individually is on their own level and dimension, and can advance and ascend.