> Probably too far-fetched and better suited as material for a scifi story, but the idea is interesting
M. Night Shyamalan directed a terrible movie from 2013 that is a version of that premise. After Earth, starring Will and Jaden Smith. Solid idea for a sci-fi movie, they botched it unfortunately.
"In the future, an environmental cataclysm forces the human race to abandon Earth in search of a new habitable planet, eventually settling on the planet Nova Prime" ... "A crash landing leaves Kitai Raige and his father Cypher stranded on Earth, a millennium after events forced humanity's escape. With Cypher injured, Kitai must embark on a perilous journey to signal for help."
https://en.wikipedia.org/wiki/After_Earth
https://www.imdb.com/title/tt1815862/