What sort of post or comment gets you downvoted the most? Especially if you don’t think it’s bad behavior in the first place, or don’t care. Does not have to be on Lemmy, but we are here…
One of the good things about Lemmy IMO is that it’s small enough to see the posts that are unpopular. If you do “Top Day” on most channels, you cash reach the bottom, see what people here don’t like.
As far as comments, attempting to rebut the person who is telling me my post sucks, is what gets me into negative numbers most often. The OP is going to voite it down, of course, and nobody else cares, usually.
Anything slightly “feminist”. You know, like pointing out that women do the majority of unpaid care work. Or saying it’s not nice to objectify women. Or sometimes mentioning the word women will do it.
Lemmy has a much, much, much better crowd than reddit, but it definitely still got the “not all men”, “I only ever comment on stories about extremely rare false rape accusations” crowd.