1 way of talking to god and sharing your feelings with him is through journaling. Don’t guilt yourself as you journal day by day. The result of this is that over time, or one day when you look over all your previous jots, it gives you a greater thing to pray on. Also, just talk to him. Leaning to Properly Praying and petition is an important skill, learn that but god knows your heart and wants you to come to him. No matter what. Even in doubt, show up. Even in guilt or thinking you’re the worst person in the world, go to him and talk to him about that. He’s not a person so don’t expect a direct verbal response, but give him time to answer you in time. The answer will come to you, in time especially if you knock and seek it.