Do u believe that there are beings that live here on Earth other than humans ? [Spirituality & Religion]

They say we have aliens, elves, fairies, ghosts, Bigfoot, giants, trolls, pleiades, and of course people who look like us. But are actually angels, or demons. And people have seen all sorts of entities for many many years and still do right now. What do you think people. Are we in this world alone here on Earth. Or do we have some visitors.