Almost all religions do believe, Lucifer was once the most beautiful of all angels.
Looking for satanists, is not the answer. If anything, educating yourself about the subject,
as everyone else has suggested, is your best option. There are seroius groups of people
who call themselves “satanists”, but they are not out there recruiting, contrary to belief.
If you keep behaving that way, some sick bastards will most certainly will be the ones
to spot you, and will want to “teach” or “recruit” you, in exchange for any attrocity their
minds can come up with. Those are the ones who ask for sex favors, but also rape,
and commit all kinds of crimes against ignorant young people. Just so you can “join”.
The one satanist church I knew about, was the one founded by Antoine Zandor La Vey.
You might find books like the satanic bibble, and such. But I warn you, they are not
what you think they are. Are you familiar with the term, “humanist” ? That’s all it’s
primarily sums up to. Asides from the obvious admiration,and/or adoration of fallen
spirits. Look up the name I gave you, and you’ll find several books by him. And yes,
when in doubt, ask. I believe that’s pretty much what we’re all here for…