Um... When I meet new people and want to become friends with them, it takes a while. If they are 'fake' then that might be there personality, considering you don't know them. You might have done something that you don't know of or you didn't mean to target them, but...
If you are suffering depression problems, please talk to friends, parents, brothers or sister, and/or a counselor.
Some people are insecure, or downright untrustworthy of their surroundings. Usually, it's not your fault if they are fake towards you. They have usually adapted their fake selves on others that it becomes a normality.