You're describing old fashion demons, who seek power and destruction and can totally possess people that open up the door. Consider all the satanic occults who online who literally talk people into commenting suicide. Here's a real world example of it happening today. https://www.youtube.com/watch?v=750121sKIcU
Id like to point out believers arn't subject to these possessions, but definitely see the influence of these things all around.
Check out this excerpt from Ephesians, which describes the forces you describe. It's not nutty to beilive these things at all mate.
Finally, be strong in the Lord and in the strength of His might. Put on the full armor of God, so that you will be able to stand firm against the schemes of the devil. For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world forces of this darkness, against the spiritual forces of wickedness in the heavenly places. Therefore, take up the full armor of God, so that you will be able to resist in the evil day, and having done everything, to stand firm. Stand firm therefore, having girded your loins with truth, and having put on the breastplate of righteousness, and having shod your feet with the preparation of the gospel of peace; in addition to all, taking up the shield of faith with which you will be able to extinguish all the flaming arrows of the evil one. And take the helmet of salvation, and the sword of the Spirit, which is the word of God. (Ephesians 6:10-17)
Anyways, your comments and comment history seem like you're really struggling, happy to talk if you need a friend.