"It’s not too late to make a fresh start with God."
Take it from one who has wandered from God time and again, God does give fresh starts.
Don't believe there is a God? I was once there myself. I was an atheist. But something (or Someone) incited me to dare to believe. I found myself willing to believe, though I couldn't explain that willingness rationally, in spite of the fact that such belief ran counter to my penchant for utter empirical rationalism and complete self-sufficiency. God, loving and powerful, has been turning my surprising willingness to believe into a deepening trust (faith) in the God made known in Jesus Christ ever since.
If I go to a great movie or a cool restaurant with tasty fare or if I read a book that changes my perspective on things, I don't keep that stuff in. I tell people about them. The same thing is true for my faith. I fell in love with Jesus Christ, God-enfleshed, thirty-plus years ago and I've found God to be incredibly faithful, my relationship with him exhilarating, challenging, and comforting.
Please, consider being willing to believe in God. Just tell the God you're not even certain is there that you're willing to believe and then see what happens.
Then, be prepared to be as surprised as I was and have remained for over thirty years, by all the fresh starts that come your way. Really.