I feel the same way sometimes, I feel like God isn’t listening and that he doesn’t care about me but that’s just a lie from the satan. Jesus loves you and whilst we don’t know why his given this stutter we most definitely know that he will never leave or forsake us. There is still hope in God and everyday you wake up, just thank him for life, our lives may seem harder than others but to still be on earth and we get to experience God walk with us during our hard times, it’s still a blessing. So I would say keep praying, keep trusting and just let God know how much you need his presence, comfort and love surrounding you, so that you can get through everyday peacefully🙏🏾