How does a victim get rid of a succubus?
If it is attached to someone or possessing them and refuses to leave, this is most likely because it has latched on to some sin or element of their personality they aren’t willing to give up. If you want to get rid of demonic influence but still hang on to the sin that attracted it, that’s not going to work – you can’t have your cake and eat it. Often people aren’t honest with themselves about the sin that’s causing the problem.