When the dark extraterrestrials leave here, what will happen with all of the corruption going on in the rest of the galaxy? Are there many other civilizations that need healing, and other dark ET perpetrators who will find us when they leave?

There are many other civilizations that have been harmed and need healing and there are perpetrators, but these are more on the level of humans, many of whom are perpetrators at present because they have been corrupted by the dark interlopers. All of that will be taken care of through the process of healing with the Lightworker Healing Protocol. It will continue working on all parties with a stake in things throughout the Milky Way Galaxy. It will continue to work on the current perpetrators wherever they might be, having withdrawn from the Earth environment. They will still exist. They will still be running their own civilizations poorly as they have done for millions of years. That all needs to continue with healing effort for them to rise above their dark past and for those souls to be reclaimed. So the work of the LHP will not be done simply with the withdrawal of the interlopers from the Earth itself. There will be many other beings still in the line of fire and being actively suppressed, including the beings within those civilizations directly. The healing work of the LHP will continue through time to benefit all.