Susanemily, you have me.

Your statement about nobody likes you says everything. It's so hard feeling like this.
I think many people feel like that in places as Facebook. I guess that it much worse for people who suffer infance neglect.
There are very few places where I feel comfortable in social nets.

It's not easy to find people who can be significant friends, much more difficult on the internet.
Have you tried with forums where there are people who share a specific hobby?

Again, your thinking about noone liking you is a barrier itself. It's very difficult to find receptive people when you are giving, unconsciously, this message.
There are so many people. Many of them are going to like you.
Have you heard your posts and messages? They are full of kindness and politeness towards the readers. Is it possible that a person like that isn't going to be appreciated by others?