Even a Satanist knows that your soul is intrinsically the person and none would sell themselves into slavery willingly, however, one can make deals requiring certain sacrifices that would make the most hardened and jaded individual quail at the strict requirements for the favour of the Dark Lord. For example, if you are willing to kill a child for the Dark Lord, then you would receive a decades worth of whatever you asked for without responsibility. The greater the favour asked the greater the sacrifice demanded of the petitioner to prove their loyalty.
An important fact to keep in mind is that all petitions to the Dark Lord require blood to seal the covenant. Satanism is not for the squeamish. I hope this helped.
Selling your soul is an expression people use. It can be done in many forms, not just one. For example if you have sex with a married person you are selling your soul.
If you have sex with the same sex you're selling your soul If you surrender any of your morals, you are selling your soul, etc.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.