I'd recommend you read up on the basics of climate change - https://climate.nasa.gov/faq/. Your post reveals that you have a very limited understanding of the phenomenon.

Fortunately, scientific consensus doesn't care about what you, I or anyone thinks. Anthropogenic climate change is happening according to statistically significant data, any opinion is irrelevant.
https://climate.nasa.gov/scientific-consensus/

It is an existential threat to the homo sapiens, and other species, however, when a political leader is ignorant.