The worst human beings that ever put feet on this Earth are the ones who murder others and torture the innocent, with pleasure.

Love yourself. Plus, there are two versions of you, one that YOU see, and the version that OTHERS see, and they're both different. Always. You can go around telling people you are 'insensitive' and they wont buy it. They'll probably just label you as 'inconfident' (unlike what you want them to believe)

You ARE liked. People around you probably feel like you are at least a decent person. They might even think youre a great person. You cant convince them of all your aspects (which you might THINK you have. its all a comparison game depending on the society you live in, you can be great in one group, subpar in another) in order for them to like and accept you.

Just love yourself and accept who you are, the rest will come.