Which planet is suitable for survival is doomed?

Humans have been searching for a planet suitable for survival in the universe, and their determination to develop interstellar migration has never given up. Not long ago, NASA discovered a planet with Kepler telescope. The orbit of this star is very similar to that of the earth, both of which revolve around a star, and the distance from the sun to the earth is also very close. Scientists named it Kepler 452-b planet. After a lot of observation and data analysis, scientists found that the orbit and surface of this planet indicate that it has an atmosphere. Because Kepler 452-b is too far away from us 1400 light years. We should know that human beings have been exploring the universe since the last century, but the universe is so vast that some scientists even speculate that the universe is endless. After a hundred years of space exploration, mankind has not even reached the tip of the iceberg of the universe. We can only land on our satellite moon, and we can't even explore Mars, which may have signs of life, but human exploration. Just like Kepler 452-b, which we discovered this time, it is the planet closest to the earth and a star with a high probability of signs of life. The whole planet is 90% similar to the earth. The period of revolution of the Earth is 365 days, and this planet is 385 days, which can be said to be very close. And it's sunny, and there may be liquid water or glaciers. This planet has towering mountains and rivers, rugged surface, and. If it has an atmospheric environment similar to that of the earth, it has a great chance to produce life. But it cannot be ignored that this planet has existed for a long time, even longer than the sun. It is concluded that Kepler 452-b has actually entered the final stage of the star, which means that it is about to die. Even if life is born on this planet, judging from the development time of our planet's science and technology, we have no time to land on this planet. We need to know that it will take us nine years to reach Pluto in the solar system and 500 million years to reach Kepler 452-B. Unless there is a breakthrough in human science and technology, wormholes are discovered, and human aircraft break through the speed of light, human life will be greatly improved. Kepler 452-B is not realistic as the second planet of human migration, but we will not give up the exploration of the universe and the desire of human interstellar migration. Although technology restricts people now, it is feasible to build city fortresses in outer space with modern technology. Just like the International Space Station, it belongs to a miniature version of robotech. As described in Hollywood movies, the robotech built by human beings will eventually be like a huge mechanical earth, and at the same time, it will also serve as a transit point for human beings and alien civilizations, so that our planet civilization will finally be integrated into the universe. We can look forward to this day, and the pace of human exploration will never stop! Do you think mankind will find a second home in the future?