Have an issue with Facebook, but I don't want to close my account?

[Say No Evil]

One possibility could be that you've change visibility of your posts. Somewhere in the posting box is a icon that you can hover over or click on and it will show you who will be able to see the post. You can change that to Friends, Close Friends, Only Me, and other choices as well, depending on whether you set up any groups. Did you ever change that? If you change it once, it stays on that setting until you change it again.

Another possibility is that Facebook isn't showing your posts to your friends as much as it was before. FB has a way of determining whether to put your messages in your friends' timelines - I'm sure if we understood it it would seem ridiculous, but there you go. One thing I've noticed is that sometimes FB will show me that one friend commented on another friends post, but I won't see the original post. And I've noticed that once someone comments on my posts, then a lot of other people start chiming in, and it's not because those posts are so much better - it's because FB thinks that if one person commented on it, then maybe more will want to as well.

I highly doubt that the lack of activity represents people ganging up on you. People are not that sophisticated or coordinated. If people want to gang up on you on FB they attack you, they don't ignore you, so don't worry about that possibility.