I'm assuming you had a rough childhood, from what you said, you think negatively when people do positive things, then, I can only assume, your parents or care taker did not want to hear what have to say when you were young and that's what's caused you to think this way about people.
However that could be wrong and what your thinking is actually what's happening. There are people who care more about themself, but most of the time that is because that's what they were taught growing up and it stuck with them. There are people out there that will gently push you tell them about your day instead of telling you about theirs, you just have to find them. When people seem to only want to tell you about their day and don't care about yours, their habitually looking for praise or comfort.
Or it could have been exactly what happened and your still only seeing what is actually there. (Both hypothesis together)
You should keep this in mind, anyone who has no pain in their heart will speak no words about themself. There are people who still are in pain who try to show they care, those people will burn up if not given the support their looking for, but they are the most likely to get support.
There is nothing wrong with how you view the people you have met so far, only one seems to have made an effort to connect with you, so let the rest go and find people who want to get to know you, who you can be your self around and they won't poke fun at you.
Listen not to extravegent speech and speak no wisdom to those who will not listen. If someone comes to a judge and can not speak, it is the judge who does the wrong. Question not your own self, question only what's around you.
Wisdom is always available to those who seek it.

Have a good day!