Sure the sun is a proximal cause…

But are you really going to tell me that you me that tho evidence that temperatures are getting warmer is bunk? For starters check out the top diagram here: https://en.wikipedia.org/wiki/Climate_change#

Would you argue against the physics of greenhouse gases? https://www.quantamagazine.org/physicists-pinpoint-the-quant...

Are you too young to have noticed climate changes over time in your life?

Edit: And the accumulation of greenhouse gases in our atmosphere: https://en.wikipedia.org/wiki/Carbon_dioxide_in_the_atmosphe...