There is a very common misunderstanding that a "cause" is something that preceded in time.
A cause is a situation. "What causes a leaf to appear green?" "What is the cause for this big box not fitting into that small box?"
A situation can cause an effect of appearance, size, or arrangement and is the result of static logic. Or it CAN also cause a change in the situation, a temporal cause. Due to the situation, an imbalance yields a motion, a change.
What is referred to as the "First Cause" concerning God is not a temporal cause about change. It is not about "what brought anything into existence". But rather "what is the beginning of all causes related to the reasoning that in turn brings changes."
"This is true beCAUSE (by the cause of) that being true."
But if you examine every truth, you can regress causes for their truth back to a "First Cause" for anything being true.
This was expressed in KJV by "I am that I am". That isn't exactly what the Hebrew meant. The first cause of reasoning is, "It is what it is", which just happens to be stated in Hebrew with the exact same lettering. Aristotle listed 3 such first axioms of reasoning, a "Triune" First Cause. But all three of those can be stated merely as "Distinction".
Distinction causes all things. (omnipotent)
Distinction is within all things. (omnipresent)
Distinction forms all knowledge and intelligence. (omniscient)
God is Distinction, the ultimate Father.
Consciousness is the awareness of distinction. The awareness of God, the very First Cause.
Does a motion cause the situation or does the situation cause the motion? Does the voltage appear on the wire because the current is flowing or is the current flowing because of the voltage being on the wire?
In the long run, each in turn causes the other. But isn’t the motion of something merely the situation of motion? Thus in both cases the situation is the cause.
If my situation is that I have an imbalance of force (for whatever reason) then motion will take place. That is the situation of reality – local imbalance, a distinction between a force and its counter force, but the specific distinction of having one greater than the other.
“The effect” when there is a situation of imbalance is that change occurs. “The effect” when there is balance is that no change can occur. The effect is that it is locked, incapable of change. It has inertia - the effect of being truly balanced.
The distinctions might cause an effect in time (a mover) or it might cause the effect of no time, no change (immutable). The situation determines which it CAUSES.
God == Who/Whatever absolutely determines what can or cannot be (what changes AND what doesn't. The Logic never changes).
If it is not God that is doing the determining, then whatever other idea you have for "God" would be subject to the determiner and could only do what that determiner allowed and in fact, would only do what that determiner caused. Thus in reality, that determiner would be the God or your God. I would say that your "God" is only "a god", not "The God" in such a case.