Jack Hayford when asked if a Christian could have a demon, he replied “a christian can have anything they want”.
Believers that obsess on crap like this are usually pretty sad people. My ex-wife comes to mind. Could not come up with any real emotional connection or even a base carnal desire for her husband, but she sure went through her daily rituals like clockwork. And accused me of being in league with satan when I asked for some tenderness from my wife.
Focus on the Light brother. Obsessing on the darkness is not a good walk...
I don’t believe “a Christian can have anything they want”.
For instance, even if a Christian runs away from Jesus, I believe because of Jesus’ perfect sacrifice which makes a Christian righteous forever and God standing by his New Covenant by which he does not remember our sins and iniquities, they will still go to heaven.
Same with being demon possessed. It helps to know the truth because the truth is light and sets you free.