My form of the cosmological argument for the existence of God would be as follows.
The universe did not exist and then came into existence but not in its present form. It came as a complex amalgamation of energy, space and time governed by rules governing its development, including those for entities that did not yet exist.
The universe is teleological. It was created to become what it is and to serve as a platform for what has occurred. To do these things it neither needed to be infinite as space or eternal in time to accomplish what was intended for it.
Due to the immense complexity and, if you will still existing mystery concerning the universe, nothing in space, time, energy, matter and the laws governing these things is sufficient in itself to explain the existence of the universe.
Therefore, the existence of the universe requires a Creator who must have an existence outside the universe, though not excluded from acting on it and in it, the ability to foresee and direct what it is to become, and when it will end, and the power to make it happen.