ah, it wasn't the whole time, but there was a period in high school, where I had moved recently from living just south of the Canadian border to the southeastern USA and so I got picked on for my accent, and there was this one girl, the first soprano, who was super loud and rude and didn't believe I was a senior when she was a freshman bc she was taller than me (I was malnourished as a kid, so I was pretty short until after I left home, now I think I'm average height? idr...ANYWAY) she was mean to me and would always pick on me for my accessories/lack thereof (we had school uniforms) because I was kind of a tomboy back then and rejected feminine things, and this girl was like a MEAN catty hyperfemme who I hated. she made my life really hard, and I eventually asked to be moved to the alto section instead of one of like 3 "second sopranos" because she would bully me for not having the same range as her and stuff. (she got furious when I got a solo part in a song and threw a fit because she thought she deserved it and that really kicked the whole thing into high gear; it was not great before but it got straight up bad after that.)

the good news is: once I got moved to the alto section, which was mostly black girls, we got along really well and they would kind of protect me from her >w< THANK YOU MY ALTO SISTERS I MISS YOU ALL I HOPE UR DOING WELL!!! >///<

frankly I think it's silly to call it Satanism since none of the modern Satanic churches even really believe in a devil. They're really just doing it to get a rise out of Christians, which, while a noble purpose (fighting for the US government to stop giving christianity special treatment under the law, specifically is what I am referring to), isn't really accurately depicting what they say, do, or believe.

the only satanic churches I know of are:
- Anton LaVey's Satanism (Church of Satan), which doesn't actually believe in Satanism and is more like if Ayn Rand made a religion and latched onto satanic imagery, and is mostly defunct since his death (at least that is my understanding)
- The Satanic Temple, an atheistic/agnostic organization focused on giving equal time to alternate religions when US governments show things like ten commandments monuments in courthouses. Personally, I understand the desire to troll these kinds of christians a bit, but I don't think it's actually helpful to give them something to rally against; they're already so out of touch with reality, and giving them an actual thing that fills their imagined devil that they can rally against only makes them stronger. So, while I respect the work they are doing, I don't think they're doing a very good job of it, but I do get a chuckle out of some of their shenanigans, like After School Satan.
- The Temple of Set, a bunch of ceremonial magicians who worship the Egyptian god Set, and have been looped in with satanists & satanism before, even though they are ostensibly called setians and practice setianism, which I guess sounds similar? idk.

I'm sure there are others (and can see that there are on the wikipedia page for satanism), but I've never heard of any outside of these three.
Personally, I think Christians misunderstand what Satan is meant to be in their own religion and that modern Satanism seems to not actually be any kind of Satanic worship whatsoever, so I don't fully understand why they chose to call themselves Satanists, other than to just seem edgy?

tl;dr: I don't super get it, but I don't really have any strong thoughts/beliefs about it.

I don't really know the answer to that anon.
I know from my perspective and from my experience, loneliness has been mostly a state of mind, but I can't say with certainty that it is for others, because I don't know their circumstances. I'm not here to render judgement onto other people or tell them their problems aren't real, because if you perceive something as a problem, then it is a problem for you, and that's valid.

I don't think anyone is meant to be anything really. the universe as a whole is indifferent to any one organism on any one planet at any given time, so to answer your question, I think "no," nobody is meant to be lonely any more than they are meant to be famous, or meant to be successful, or meant to be long-lived; these things are purely up to chance, though some we have some control over, at the end of the day things just are as they are.