You'll get full disclosure at the General Judgement at the White Throne. Not before.
We are ruled by angels who rejected GOD and became Fallen. Satan is their leader. This is all explained in the Bible.
The fallen angels want human worship. The blood sacrifice is a mocking of Christ on the Cross.
Moloch is in the Bible in several places. Leviticus 18:21
'You shall not give any of your offspring (CHILDREN) to offer them to Molech, nor shall you profane the name of your God; I am the LORD.
>So can anyone explain what these people gain out of doing sacrifices and worshipping of Moloch?
Power. The fallen angels offer them POWER over other humans. And money. And fame. etc.
The battle of GOOD versus Evil is very real.
Ephesians 2:2
For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world forces of this darkness, against the spiritual forces of wickedness in the heavenly places.
Not to derail, but Evolution is a lie. We were created, as the Bible says.