Yes, there are many. However most are minor tribal religions.
Hades is not a figure in Christian religion. In Greek mythology, Hades was the god of the underworld, while in Christian belief, the concept of hell is associated with punishment after death for those who have sinned. Hades and hell represent different beliefs and traditions.
Hell is the lower infernal realm governed by Satan and the fallen angels and the place of punishment for condemned souls after death. Some religions (e.g. hinduism, buddhism, animism) have no definition of Hell as the concept is not part of those religions.
The concept of hell as a place of punishment for wrongdoing appears in ancient Egyptian and Mesopotamian religions. In Egyptian mythology, the god Osiris judged souls in the afterlife, while in Mesopotamian religion, the underworld was ruled by gods like Ereshkigal. These beliefs predate the development of organized religions like Judaism, Christianity, and Islam.
Yes the Muslim religion has both a hell and a heaven
No. Hell is a religious concept, not a real entity.
He has no religion. He against the concept of "religion" entirely.
Salvation is usually explained as saving our souls from eternity in hell, by the forgiveness of sins. The Jewish religion does not have the concept of hell, so this concept can not be explained in terms of Jewish religion. Christianity had to introduce to concept of hell, so that salvation would be truly meaningful. Nevertheless, Judaism did have the notion of taking away their sins. Traditionally, at the Passover, they would release one lamb, or goat, to take away their sins, and sacrifice another. In the gospels, Barabbas ("Son of the father") would be set free, just as the Jews ritually set free a lamb in the Passover season, and Jesus (Son of the Father) was to be the sacrificial lamb.
it's where you are open to the concept of religion but not convinced by it
Most of the religion like Christianity, Judaism, Hinduism, Islam and even the Egyptians all believed in life after death and with the concept of Heaven and Hell
No. The first people to believe in Hell as a place of punishment were the Zoroastrians.
in hell
Inverse proportion is a mathematical concept and has nothing whatsoever to do with religious concepts such as hell.