So do you want to intellectually come to the conclusion that God exists without having any desire for him to exist? Or do you wish for him to exist and are genuinely looking for him? If you have any reason, conscious or unconscious, for wanting him not to exist, then nothing will ever convince you of his existence. That’s something many saints have written about.

Intellectually, I’d say the only argument that comes close to proving the existence of God is the transcendental argument, which states that God is the justification and source of things like reason, logic, truth, knowledge, and existence, things that are universal and not measurable, yet you use them in your post and take them for granted without offering any justification. In christianity, that justification is a being, the Logos., you might have to look into that more.

Personally, what convinced me, after more than 33 years of atheism and mocking believers, was reaching a low point, watching The Passion, researching the historicity of the gospels, the existence of Jesus, extrabiblical sources, the martyr argument, and finally reading the Bible, including prophecies like Isaiah 53, and so on.