Why do people online tell me I'm decent/ugly but my friends and family say I'm pretty?

[Loba]

You shouldn't let it get to you. People on the internet will sometimes just be mean for the sake of it. They're anonymous, you don't know who they are, and they don't care if they hurt your feelings. Some people do it on purpose.

Now since you're not posting a pic of yourself I can't really answer your question, all I can say is that people online are less likely to lie about those sort of things than people in real life. If my friend goes to me "am I pretty?" I'm not going to say "No you're ugly." I'm just going to be like "Yeah of course you are (:" because I wouldn't want to upset them, or ruin our friendship.

Looks aren't everything and I'm sure you look fine honey. You seem nice please don't cry.