You might have gotten your image of God from a catechism book. That is talk about God. It is not God. So maybe the problem is not so much lack of faith in God, as you just need to get your own God that makes sense to you and that you can experience. We can say that God is unknowable, in some intellectual sense, but you can still have an experience of this God.
A lot of us are simply denying or doubting someone else's idea of God. It is not a crisis of faith. It is a crisis of experience or a crisis of trust in your own ability to have an experience and relationship with a God that fits you. God comes in all sizes.