This is just my opinion.
In paradigm you mean model? You need to create your own model or adapt to another. With God, theism and deism, you have to subscribe to the model of another or create your own. Create your own God, as it were. You mentioned luck. There have been many gods of luck. You mentioned another specific god, Jesus Christ, who also operates within a specific paradigm set in place. If you are uninformed or deviate from that then your chosen paradigm becomes your own, not that of God or Jesus or luck.
Religion tends to be syncretistic upon popular demand. So determining what the paradigm is can be problematic. Spirituality is a personal responsibility. So, ultimately it's up to you, but if you aren't in line with the paradigm in the case of specific gods then you might as well ask the cat. I don't think anyone ever got anything from just praying to some random, vague concept of a specific God. Even if they did attach a specific name on the concept. Jesus, for example, said that those seeking him would find eternal life. (John 17:3) But it isn't so much a test as it is an earnest seeking. I don't belong to any organized religion and I wouldn't advise anyone else to do that, but that's just me. I don't buy into the idea that anyone can convert another, but there are clear markers set in place within the specific paradigm you are referring to.
One person might believe in "God" and if so may have come to the conclusion that the reason we all die is that it is God's will. So, praying, for example, that we don't die is contrary to God's will. It would be like me requesting the local jazz station play Twisted Sister's Christmas album. The Trinity may have come from somewhere other than God. Plato, for example. In a way, that; namely that God doesn't answer prayers not in line with his will is more of a deist concept than a theist one, traditionally speaking. And the majority of people who claim to be theists would strongly disagree with me on that point. Maybe they think God cares that they pass an exam or other trivial pursuit. It's up to you to seek the evidence.
Maybe you don't accept God, either as a vague concept, a sort of cosmic wishing well, or any of the more specific Gods available. You might want to explore that as well.