If causality, as the saying goes, something causes something, is always true regardless of reality, what is God's cause?

The question is a bit silly in my opinion, but it is asked in light of the philosophy of the Honorable Rabbi, and I will explain.
I recently saw a discussion by the Honorable Rabbi on a channel called Rosh Rosh regarding the rationality of belief in God.
The Rabbi's argument (of course, if I understood him correctly, because if not, the question is probably not valid from the start)
There were logical laws such as the main law discussed in the debate, which is the principle of causality (meaning that everything has a reason) are arguments that are true regardless of the universe or reality in which we live and will always be true.
The main argument of the young man with whom the rabbi argued was that outside the realm of reality that we know, the logical laws as we know them in our reality do not necessarily apply, and therefore there does not necessarily have to be a causal factor.
The rabbi's answer (again, to the best of my understanding) was that it is true that it is not mandatory, but according to common sense, no matter what reality you find yourself in, these laws will apply simply because they are always true.
And this brings me to the question with which I began, assuming that every reality must have a cause (or even outside of reality, because I think it is possible to call outside of reality another reality in itself). What is the so-called cause of God? That is, he must have a cause because we act according to the logical laws that are always correct.