I just did using the transcendental argument. God is the necessary precondition for universals such as logic and reason. They exist therefore God exists and these universal metaphysics are a reflection of his divine mind.
What is the epistemic justification for your world view? Make sure not to use universals or subjective experience because the former is in question and the latter is arbitrary.
Math is just our understanding of how the universe works. Logic is just our description of how to correctly reason.
Okay. If these things are just descriptors then they aren't universally true. If they exist and are universally true then you have no account for how that is the case. Either way you are using immaterial, metaphysical concepts to make the case that things that are immaterial and metaphysical don't exist.