Look up "starlifting". Isaac Arthur has a great video. An advanced enough civilisation can actually significantly, and possibly indefinitely, delay the expansion and destruction of a star by removing heavy elements and adding hydrogen. So it's possible we could stay. Even after heat death with megastructures. (he has other good content on that) But by then it really wouldn't matter as we would undoubtedly colonize new worlds.
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Super interesting, will look it up