Also, I would think the devil can read. If so maybe he might be working on a plan to screw up the Bible’s ending.

God is us and, collectively, we are evil. Individually we are just flawed.

Think about this. Say god was an ideology (which it kind of is) and then say the devil was another ideology (which it kind of is). Now, assuming these 2 ideologies exist in different proportions within the human mind. Depending on external factors such as lifestyle, upbringing, memories, etc; we grow and the proportions change depending on how we live. In this sense, if we are attacked (by a murdered) we could say we are punished by the devil and if someone saves us then they are a god send (police). So saying that god works through humanity and the devil works through humanity would be correct for this argument.

I always say that if there were some kind of god, he/she or it is an uninterested observer with no supernatural powers what so ever. He definitely does not have your back.

He/she/it simply isn't. No god has ever existed. Therefore, all questions about any god are irrelevant,

Funny I was just thinking about this earlier this morning when another post asked "if God is benevolent why all the suffering?".
Well; if we want to go by what their own bible says, here are some copypasta citations.

Behold, this evil is of the Lord. 2 Kings 6:33
I ... create evil. Isaiah 45:7

What? shall we receive good at the hand of God, and shall we not receive evil? Job 2:10

Out of the mouth of the most High proceedeth not evil and good? Lamentations 3:38

Shall there be evil in a city, and the LORD hath not done it? Amos 3:6

Or maybe he's following the Prime Directive, and not necessarily malevolent.