Well… Elohim is the plural version of El. Despite gods appearing as plural in the Hebrew text, it was not translated to the English version of the Bible.
Some Biblical scholars believe that early Judaism had multiple gods but over time, it got condensed to just one. The god from the Creation story is technically not the same god from the Moses story. Then there is also Asherah.
The first commandment is also worded “You shall have no other gods before me”, which is less defining a singular and more defining a hierarchy.
To OP, I don’t think the Elohim are aliens or anything. The concept of extraterrestrials only started popping up in the 20th century. The loudest supporters of the “God/gods are aliens” theory, have also been part of cults. I personally find Biblical study fascinating despite not being religious, however I noticed the Bible is more literal than what people give it credit for. If it doesn’t mention aliens, then they’re not aliens.