>>635125
I don't think there's ever going to be a single video or written argument that convinces you. For some truly analytical people that can suffice, but for the rest of us, it simply doesn't work that way.
Even if you feel stupid while doing it, the best way to believe is to pray.
>Lord, I believe; help my unbelief!
Don't pray for God to give you a sign, but pray for him to strengthen your faith, to relieve your burdens. That's the best advice that I could give.
Speaking from personal experience, reading the lives of the Saints and learning about Church history also played a big part in convincing me of the reality of Christianity.