I am a theist, what do you think of my proof for God existing?

[Asmodee]

What is your information of the concept of God, gods, etc., just choose one?

It is really frustrating that you simply cannot understand that this is not how it works.  I DO NOT have a concept of God, gods, etc.  I don't believe fairies exist, so why would I assign properties to them?  What purpose would that serve?  If properties were assigned it would make it more possible to test for those properties.  So, as a person who does not believe in fairies, the properties I would assign are meaningless because they would be things that I know would produce no positive results.  It is the person who BELIEVES in the fairies who needs to assign the properties to be tested for to prove that thing exists.

Let us look at your, frankly, pathetic "definition" for God:
"God in concept is first and foremost the creator and operator of the universe and man and everything with a beginning."
The only properties assigned there are "creator" and "operator".

Let's look at operator first.  Google "operator definition".  I am sure you are not saying that God is part of a mathematical expression.  Therefore I must conclude that God is "a person" as EVERY other definition of the word includes "a person".  But a little later on you include "man" in your definition.  So God is a person who created and operates people.  That makes no damned sense.  You've used a wrong word there.

So now the only property we have left which we haven't shown to be flawed is "creator".  There are countless "creators" in mythology.  The big bang is technically a "creator".  Membrane theory is a "cause" for the big bang.  "Creator" is such a generic term that it tells us nothing about the nature of your God concept.

So, essentially, your argument is even DUMBER than it first appears because once you break it down it's easy to see that your argument is simply this:

1) God is the creator
2) Things exist
3) Therefor God exists

THAT IS STUPID!