I know what happens in my ritual circles and those I have been part of.
A lot of fun and laughter, a bit of singing and music. The chance to experience magic and ritual with a group.
Sometimes a coven has a ritual circle, sometimes it doesn't when they meet.
If meeting to celebrate a sabbat, there may be a short play or part of the ritual may be used to pay homage to the changing of the seasons. If meeting to celebrate an esbat, there may be spellwork or healing work.
I've been part of rituals where the leaders couldn't organise a piss up in a brewery and people left it feeling disjointed and unfilfulled, and I've been a part of rituals that had no leaders but everyone left feeling better inside and more connected to those around them.
And I add this simply because I try to never take myself too seriously.
Pagans don't practice human sacrifice any more, but they are maintaining list, just in case we decide to start it up again. Please let me know if you would like to be on it.