Hi happycheeks,
There could be many reasons why someone didn't reply to your message. I know that for me, personally, if I'm going through a rough time I will not reply to messages. Not because I don't like the person, but because I need to focus on myself for a while.
In my short life, I have learned and accepted that not everyone in this world will like you. It's an impossible goal that wastes too much time and energy - I have seen a couple of people in my life try to be liked by everyone...it never happens! What matters most is, that you like yourself first. I have found that I am more drawn to those with self-confidence.
I have seen your posts on this site, and all the replies you receive. You are getting a lot of support here, from people who DO care about you. So there are plenty of people on this site that like you.
Hope you're feeling better soon.