You exist within reality, embody an aspect of reality, participate in reality. That's a completely different understanding. When I talk about reality, sometimes people object. This reality embraces you and me and is the source of and context for you and me, therefore, Hashem couldn't be any less personal than you and me. In fact, Hashem is infinitely more personal.
People think that reality is dead empty space, but reality is actually conscious, alive, and loving.
Therefore, we cannot speak of reality in an impersonal way. The answer is Hashem. One metaphor that can be helpful for understanding our relationship to Hashem is the relationship between the thought and the thinker. In my mind. That man exists within me, yet I'm not that man.