Personally I would stay quiet and out of the way and avoid religious things. When push comes to shove I would say I don't know. I would try to be for the things that maximally progess things. Be as progressive as I could acceptably be. Myabe taking calculated risks as I can especially in forming friendships with possibly likeminded folks.
The Satanic Temple
I noticed there wasn't a TST Lemmy community. The Satanic Temple is a modern satanic religion that aims to promote human rights and compassion. Check out their about page on their official website at https://thesatanictemple.com/pages/about-us. Note that this community is not an official affiliation. TST is also separate and not affiliated with the Church of Satan, who have a slightly different viewpoint of what satanism truly is. Dunno what to post in here, but maybe some will search for this and take part. Hello!
I think most Satanists would agree that you should be very cautious however you wish to proceed. Understand the risks of being openly heretical and only take them on if you're willing to handle them. Speaking for what you believe and for what's right isn't easy, but you can't speak at all if you're imprisoned or killed for your beliefs, for example. I'm honestly in no place to give you advice for what you should and shouldn't do because despite the political and religious climate being relatively hostile in the US, I can still speak my mind relatively freely. I live in Oklahoma, but even here I can wear Satanic clothing and not worry about repercussions (my threat level rises as I leave the major cities, however).