While you are literally correct that we don't know everything, we know much more than you appear to think. Each of the climate factors that you noted have been extensively researched. We know, with a range of confidence, to what extent each of those factors have had on the climate, and to what degree (sorry) they have contributed to warming.

You appear to be thinking of CO₂ as being a bit like the last person left to dance with. It is 150 years of physics and empirical research that makes the case for CO₂'s role in warming, not the fact that other factors have not played a role.

And science could care less about some imagined political "Agenda".