You're basing your view of yourself too much on what other people might or might not be thinking. Your self-esteem needs boosting, so I would suggest to you that:

1. You are not ugly; you see yourself that way, but that's a mistaken view. Turn
that attitude around and say to yourself: "I am worthy, and I am nice and I am good".
If you are not handsome or beautiful that can always be corrected by being a good
person who is kind and helpful and means to be nice. Looks are only of surface meaning,
and it's what's inside you that draws people to you in friendship.

2. Think more about positive things in life. You build your friendships by being helpful, kind, and considerate of others--thinking about them as good people, too, because in most cases they are. Most people mean well. When you encounter someone who is not kind and nice, just simply be pleasant, but don't take seriously anything he or she might say or do.

3. Realize that when people speak they are talking really about themselves, not you.
So if you see a negative view or a positive view, remember that people are talking about themselves, not you.

4. You have as much to give in kindness, good will, and pleasantness as any other person alive. Please try hard to give yourself credit for being genuinely a good person.
Remember, you were created by God and God doesn't make mistakes.

Take care of yourself and good wishes.