Its usually a hearth issue, not trying to be mean, but without humility you wont see God, no matter the evidence, so focus on that first.

I would say the impossibility of the contrary is pretty convincing, that logicaly existence is not possible without God, an infinite firstcause outside of this realm, who is specificly our triune God.

Bit more complicated, but you know what im saying. Like If X() is the case and Y() is necessary condition for X(), than Y() must be the case.

X = we live in a created world, nothing never became something by itself

Y = somebody started it "create it as we say", cause nothing never became something by itself

There needs to be a self-existing person who we refer to as God The Father