Focus on what you want, the path of iner davelopment means more to you, and as far as the used to be friends forget them act like you do not heir them or see them and they sould stop
Why don't you tell somebody what's going on? Then maybe you can all get into a group and talk about what happened. These people sound likes jerks and maybe you could tell an adult that it's bothering you. Trust me, adults can work wonders.
Humans are social animals naturally. They desire to be accepted and fit in. Some, not all, gain enough sense of self to be capable of stearing away from the social "norms". Some of the most famous people of this world were not exactly "cool" to their peers. There are far more followers in this world than there are leaders. But the leaders have the better advantage in life.
First of all, being "weird" is a term people use when you are not in the "norm". But what is "normal"? Nothing is "normal" until society decides it and enough people begin to follow it. I don't know about you, but I want to be unique. If they are calling you weird, take it as a compliment. At least you're not a mindless follower who has to strive to copy others to feel good about yourself.
It's a very common problem that sociologists study all the time. People judge others on the way they look, talk, dress, and act unconsciously compare it to their own standards based on their social class and the values and norms of their culture. Now do you want friends who will look at you for who you are inside and like you for who you are. Or do you want to be a sheep and pretend to be something you're truely not?
Pity them. They make themselves feel good inside by putting you down thereby giving themselves a false sense of confidence. They're making up for what they lack. People who stand out among the norm are seen as threats pschologically. Threats to other's sense of security inside themselves.
You need to find friends who are leaders too. The friends you had are obviously having some identity issues.
Be happy with who you are. As long as it isn't hurting anyone, there is nothing wrong with it. Find out how your personality can benefit you, not how your personality can change to benefit others.
When you're a leader personality it is harder to find good friends but once you do, they're usually friends for life, not fly by night.
Record everything that they're are talking about and doing. Next report it to someone you trust, such as your parents, and teacher, even a police officer if you can't find anyone. They are bullying you and you should take action because it's unacceptable for your own friends to be treating you in that manner.
Blessed be.