This:
why dose Gravity exist if there is no God? what caused it to work that way?
God gives that answer, God can answer it because he knows the best ways to do things and in this case that was the best way
translates to:
Q: Why does gravity work the way it does?
A: Because God wanted gravity to work that way.
Q: Why did God want gravity to work that way?
A: Because that is the best way for gravity to work.
Q: Why is that the best way?
A: <insert reasons why gravity is a good thing here>
Q: Why does that make gravity better?
A: It just does.
where it should just go:
Q: Why does gravity work the way it does?
A: It just does.
In order for your theory to predict where the apple will fall, it still has to have all of the physics-y bits in there somewhere. Just saying "God" doesn't help you predict anything. And since adding in all those intermediate steps doesn't help you explain anything beyond what just physics will explain, it's just adding in a dangling node labelled "God" and re-labeling "The Physics of Gravity" as "God's Divine Will Regarding Gravity" without changing what the theory predicts will happen.
Basically, in order to justify adding in God to your theory, God has to do something. If God+Physics predicts the same thing as just Physics without adding God, then you don't need God. It's dead weight on your hypothesis.
How ever your assuming
it just dose, cant work with God, why cant it?
WHY do you need to justified Gods, thing but not the other side?
You dont need god no, but like with God you need to explain why he picked it, with out God you have to expelling why it made it that way, either you can use "just cause" with God or you cant use it for the other side
no other way around this at all
I'm sorry man but your picking what you want to list here
Your also assumign its possible in the first place for Gravity to exist with out God, if god is needed for it then your idea fails
what proof do you have that god is not needed?
"just cause" dont mean God is not involed, it means it happens cause it happens
God may of caused it to happen, a bunny may of caused it to happen, it dont awnser why, and so it dont mean god is not in there
whats more your logic is still faulty, for the biggest reasson you claim this is based on whats more complex but then you cut out evrey single thing that's required for gravity to work and say "it dont matter" and say thats proof God is not real...
"just cause" dont tell you how it works, its making an excuse to say your way is faster.