I'm only going to give you this advice once because I don't want to invest too much. So take this post to heart.
The only thing wrong with your posts/behaviour is that you care. Don't do that. Some people will like you. Some people will think you're the worst. Just like real life. Stick with those you like. For everyone else, develop a thick skin or use the ignore feature.
Life's simple if have confidence. Who cares why some people don't like you?
Once again, take this to heart. I'm not looking to be a proper mentor.
Also, this isn't an invitation to stop thinking or being self-aware. Do your best not to be a cunt. If EVERYONE gangs up on you, have a real think and maybe have a talk with someone smart.
Cool?