Tell me briefly what stages of evolution the sun has to go through? What is its final destination?

The sun and its planets were formed about 5 billion years ago when interstellar material clouds gradually contracted under the influence of self-gravity. Some people believe that because the sun contains more heavy elements (such as iron) than many other stars, , it can be inferred that the sun is a second-generation star, that is, the gas cloud forming the sun contains the embers emitted into space by other stars after nuclear combustion. The current condition of the sun has been maintained for about 5 billion years. After its hydrogen fuel is exhausted , the energy will be maintained by the nuclear reaction of helium and other heavier elements. In the process, it will gradually transform from the current yellow dwarf stage into a red giant, and then into a red supergiant. After all the nuclear energy is used up, there will be no energy inside the sun. It uses energy to resist gravitational collapse, which greatly reduces its radius and greatly increases its density, causing its material to enter a degenerate electron gas state and become a white dwarf. When it can no longer shrink, there will be no energy to release, and it Its life will end and it will become a cold "black dwarf" that does not emit light and is in a degenerate state. Its lifespan is estimated to be up to 10 billion years.