What is the requirement for God in our lives since our lives are shaped according to the karma or actions which we perform? If we do good karma we get good results and if we do bad karma, we get bad results. Then, what is the role of God in all this? I think that people manufactured the concept of God just to drive society towards good karma under the fear of a higher, very powerful controller waiting to punish those who do anything wrong and for clinging on for mental strength and solace during hard times.
According to your own admission, our lives are shaped by the Law of Karma and we enjoy or suffer the due results of good and bad karma respectively. Common sense tells me the moment you accept a law, a lawmaker must be there, who naturally is the highest authority that awards good or bad results.
Even many global scientists agree that here everything functions according to physical laws like
the Law of Inertia, the Law of Gravitation, the Archimedes Principles, and so on. But, they do not know what makes the laws of physics as they are. They only merely explain how the law works.
Actually, one can develop faith in God through unbiased observation of orderliness of every cosmic functional aspect and the unfailing consistency of physical laws. God is not a fanciful imagination by someone with a perverted brain. That God, the Supreme Lord, is a sentient being is accepted by some of the great world scientists whose opinions are given below:

Fixed wing aircrafts must romp up to a certain speed before they can take off whereas insects can take off from static position. Performing complex aerial manoeuvres, they can alight on a glass or a tea-cup because they have a high degree of course control. Their flight defies the laws of traditional aerodynamics. This opinion covertly suggests that even many global scientists agree that here everything functions according to physical laws like the Law of Inertia, the Law of Gravitation, the Archimedes Principles, and so on. But, they do not know what makes the laws of physics as they are. They only merely explain how the law works. there has to be a supreme intelligence of a sentient being behind all physical laws of this universe, called God.
My own view is that the God has formed this universe and given us free will to be somewhat like Him, have some of His attributes, to help others and humanity and this universe grow, improve and increase and come close to God
“Not just Personality but that God wants to have personal relationships with the creatures of this universe – that is my belief.”
I saw in it (atom), the key to the deepest secret of nature and it revealed to me the greatness of creation and the Creator.
