Question

Hello Rabbi,
I’ve become convinced of the existence of God; I almost have no doubt about that. What I do struggle greatly with, though, is grasping the move from a deistic God to a theistic one. It simply doesn’t make sense to me. I haven’t found any sufficiently convincing proofs for that (the witness argument and the like).
And even if I were to conclude that the Torah was written in some form of divine revelation, who says the tradition is correct? Why infer that there is an Oral Torah? After all, that is not learned from the text at all, and sometimes it even contradicts it.
I’d be happy for help, because I’ve really “fallen in love” with the commandments and with the Torah, but I do not intend to live a lifestyle on the basis of emotion.