have stronger faith in God

I know He’s there, I pray, I go to church, I read the Bible. I know He exists, He’s answered some of my prayers. I just don’t have a relationship with him, and I’m not sure that even makes sense, but it’s true. I believe with all my heart, but it’s like He’s far away. I know He doesn’t move, so how did I move, and how do I get back to that time when I was 13 and had a relationship with Him? I just don’t get what went wrong and when I moved and how. . .