I do not believe in the Apocalypse or anything of that sort.
When humankind has made our planet unlivable or some series of major geological events make the planet uninhabitable, then our species may cease to exist on Earth.
If the giant volcanic caldera under Yellowstone National Park turns into a supervolcano , it could immediately kill off most live over much of the USA and parts of Canada. Over the following few years it could wipe out most life on earth. This could happen any time or not for thousands of years. Scientists can’t predict the future. They are good at learning from the past.
There are other potential geological events that could occur in other places on Earth that couls do other very nasty things to the world as we know it.
People digging deep into the earth for oil or minerals could unintentionally set off a disaster that might not have happened on its own for eons.
So I don’t know exactly how or when but I know it could happen, or not!