Regarding heat pumps, where does the extra energy come from?

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As the name implies, a heat pump is very hot – and popular (in a conceptual sense). As mentioned in previous posts, heat, like water that flows from high to low places, always moves from higher temperatures to lower temperatures as a natural phenomenon. But people can create machines; just as a pump is used to lift water from a lower place to a higher one, a heat pump can be used to transfer heat from a low-temperature area to a high-temperature area. Therefore, a heat pump is essentially a device for transferring heat; its function is to draw heat from the surrounding environment and transfer it to the object to be heated (the object with a higher temperature). Its working principle is the same as that of a refrigerator, as both operate according to the reverse Carnot cycle. At the same time, a heat pump does not convert electrical energy into thermal energy; only a small amount of electrical energy is used to raise the quality of heat. Therefore, a heat pump is not a perpetual motion machine. When a heat pump is in operation, it consumes a certain amount of energy to extract the energy stored in the surrounding medium; this energy is then utilized by raising the temperature through a refrigerant circulation system. The work consumed by the entire heat pump unit represents only a small portion of the work it outputs. Therefore, the use of heat pump technology allows for significant savings in high-quality energy resources. ” None of these are a problem, but there are still things that can be traced back. What I want to ask is that the so-called heat transfer also occurs through the process of evaporation and condensation of the refrigerant, that is, via heat exchange. Since it is heat exchange, assuming a 100% efficiency in heat exchange, the amount of heat absorbed should be equal to the amount of heat released. Just as when transporting goods, you need enough space to hold those goods first. For example, in the evaporation stage, why does the internal circulation of the refrigerant consume only a small amount of electrical energy (the work done by the compressor), and yet it still has enough energy to exchange with external heat sources? Moreover, it can continue to circulate indefinitely. What is the basis for this equivalent energy exchange? There must be some underlying reason for this. Some people suggest that it is related to the phase change of the refrigerant, namely the relationship between sensible heat and latent heat. Do you agree with this view? Could you explain it more in detail? How can we give examples? Can nuclear fusion work?