Climates change over time.
It is based for the most part on solar changes.
Pollution is not a good thing. Humans have fouled entire lakes and rivers in the past. We can do it again.
Can we foul an entire world of oceans? Theoretically, I suppose. So we should avoid doing that. I suspect it would be some kind of poison/radioactivity.
But I don’t really know.
Genesis 1:28 confirms your thesis:
“And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it: and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth.”
We have come to subdue the earth and have dominion over every living thing. Our impact is noticeable.
But I do not think that we are having a significant impact on the climate, or that we can reverse that impact.