Good news is that by dumping teratons of CO2 into the atmosphere we're changing the spectroscopic signature of our atmosphere in a way that makes it clear that we're intelligent life that needs some help.
Bad news is that it might also kill us before they get here.
No, no you can’t. We turn the oceans into acid and are collectively one torn paper bag away from starting a nuclear war.
Best you can do is containing the amalgamation of insanity called mankind on this planet. Because if we make it off this world, we will probably hunt you down for fun.
A possibly interesting read would be about aliens who bring a cure for all illness, but unknown to use it also cures people of the need to get ahead of thier fellow human at all costs. Thus they stabilize the human race which then stabilizes the planet...
Something kind of adjacent to this happens in Octavia Butler's Xenogenesis series. Aliens come over to fix the Earth and humanity, but decide that human nature is part of the problem, and set out to modify it. It's a really interesting read.
Aliens: "As your punishment for what you did to the whales, your species will be enslaved according to Galactic Enslavement Code. You will ONLY be allotted Housing, Healthcare, Food an-"