faith

Hello Rabbi! I have a few questions about God. According to the Rabbi’s definition, God created the world and He oversees all the details of creation. So I have some things that need clarification: 1. How does the observance of the mitzvot by me and by a tiny nation like the Jewish people contribute to the existence of the world? 2. Will the world cease to exist without the observance of the mitzvot? 3. Why does God want us to observe the mitzvot? 4. What do you suggest to a repentant person who loves to study Torah but really can’t connect to prayers, and this is after studying the meaning of prayer. In my opinion, it’s too long.. 5. What are hell and heaven? 6. Will Sabbath desecrators who don’t believe in the name be punished after their death?