Can we only take the earth wandering after the sun runs out of energy?

The solar energy is exhausted, so do we humans still have it? How can you wander around with the earth? What is the logic? Is it true that we can take a cloud or balloon with us?

Let's watch The Wandering Earth, but don't be fooled by some things in it. The story in it is that science fiction is all false. You think that the earth has no energy, and without sunlight, it can promote the photosynthesis of plants on our earth and make oxygen for us. It is because of oxygen that we people on earth can live.

If the sun has no energy, can we humans still live? To think that we have taken the earth to wander, you human beings are dying, and there is no strength to take the earth to flow, besides, you can't take it.