That one comes up a lot as some kind of counter argument, what caused the causer, who caused God? Yes, the "argument" comes up frequently but never addressed.
We have no way of defining God, but most minds tend to wander towards some kind of religious imagery of God, which doesn't lead us anywhere and adds nothing to our understanding. Why can't you define the God in whom you appear to believe. That adds less than the religious God that some believers can tell you quite a bit about. You have yet to mount a convincing argument that there has to be a first cause.
There has to be a baseline, an Uncaused from which all cause is generated, otherwise we have a regression of infinite causes and time and the present would not exist. That is true if your assumption is true which is the basis for many in their belief in a religious God.
--- Hindu cosmology which you say that you like does not reply on a first cause.
