Yes. It's Dystheism.

I've always said (jokingly since I'm an atheist) that Christians got it mixed up and thought Satan was God, so they've really been worshiping Satan all this time. They don't want to admit they're wrong about him being good, so they make up all kinds of excuses for all the horrible things he does. That's why they were totally conditioned and ready to do the same with trump.

the term i always heard was maltheism. reading the other comments though, i'm surprised how many other terms there are for this.

fun fact: renowned mathematician Paul Erdős referred to God as the SF, or Supreme Fascist, who kept all the best mathematical proofs to himself.

Can I interest you in Sithrak, the god who hates you?

Maltheism or Dystheism might be your bag. Dystheism is the idea that God(s) are not all good and may be evil and Maltheism is a more recent addition that posits a strong belief that there exists only a categorically evil divinity.

Some forms of Gnosticism assert this.

Gnosticism is a broad group of early Christian cults that are influenced by earlier religions, so it's not a monolith and I don't want to paint them with the same brush, but:

Some of them include the idea that our souls (our consciousness) are from a realm or being of light, but the material/physical world was constructed by the demiurge (yahweh of the old testament) and has trapped us here.

According to this idea, Jesus is actually from that divinity beyond Yahweh, and is not the son of God. So Jesus' sacrifice was not just the crucifixion, but embodiment itself. He brings us knowledge (gnosis, thus gnosticism) of our true divinity and through that knowledge, salvation from this material prison.

There's an amazing book about all this, called, The Gnostic Religion, by the philosopher Hans Jonas.

Misotheism.

Miso as in misogyny, misandry, etc. Not as in the delicious fermented paste that makes a lovely soup.

Its 'god(s) exist(s) and can absolutely go fuck itself/themselves, possibly for the following reasons...'

I genuinely believe that God exists and he is evil, like a toddler who fries little ants with a lens.

That could describe the Demiurge in Gnosticism.

Yes, it is called Heresy.

For there is but one god and he is mighty.

IN HIS NAME WE SHALL PURGE THE UNCLEAN.

ALL HAIL THE MIGHTY GOD-EMPEROR

FOR GLORY AND FOR TERRA

Some of the Gnostics reckoned that El/Yaweh was an evil demiurge. There are some that believe that El/Yaweh is actually Loki and that we are on the verge or Ragnarok.

Relevant Worf.

God is unreasonable and scary when you are a Christian, at least for me when I grew up. You're basically told he can read your mind so you pretend he's a great guy, but to me an evil God is just Christianity.

Some forms of gnosticism say this

The philosophers religion.

This is definitely some shit Nietzsche would crack up high as fuck on opium. Hell im pretty sure he did.

also, if we're going by traditional religious figures. Satanism. Though modern satanism is very different. I would argue that this is more accurately described as "christian satanism" or "christo-satanism"

This was pretty much every polytheistic religion. Not all the gods were evil but there were always evil ones.

Some forms of gnosticism also believe this. Look up the Demiurge and its background.

I call it, god, the Tyrant.

The term you’re looking for is Evilgodism

Misothiest is the term I heard.

https://en.m.wikipedia.org/wiki/Misotheism

Isn't the god supposed to define what good and evil even is, and wouldn't therefore any monotheistic god be "good" by definition?!

A toddler who fries ants with a lens isn't evil, though.
At least not more evil than most toddlers.

My limited experience with going to Church of God places indicated to me that they hold this belief, but I do jot know the term for it. They didn't pray to god, they prayed to Jesus, specifically. And cried for him. And thanked him. And apologized to him. And so on. All to Jesus, not god, who are apparently different.

The idea of the Trinity is not the same across all "Christian" religions, see Arianism for example of an early split.

Adaptus Ministorum

They certainly didn't start out this way, but the terms gnosticism and manichaeism are now both used loosely for this depending on the context.

Anti-theist.

God is real [points thumbs to self] and he's evil as fuck.

I am unimportant. This world is primed for the great devourer.

There is no god, but if there was one, the only logical conclusion is that he’s evil. So whatever you call it, your religion is the most sane one I’ve ever heard about

Anti-theism?

Maybe apatheism?

It’s called pretty much every Abrahamic religion. There’s others you could pick from too though.

I get what youre saying but unless you believe in a whole deific pantheon that spans the moral spectrum, you just cant logically label a single god-like entity as evil, as it would have no meaning without contrast.

Feeble mindedness ?

Blasphemy?

The real question is why do you feel so angry and upset about your life? I would start focusing on the good things not just the bad ones.