First of all, just ignore them. They are just being an idiot
Second of all of you don't show any sign off fear or emotion they should after a while leave you alone
Thirdly, I know that you should not be treated this way and I am going to say sorry even if it is not my fault.
Fourthly, think about the people who care about you. Just relax and hang out. If things get a little tense go on a walk or bike ride
Lastly, know that your parents and friends love you more than my birth parents and cheating friends do
P.S no one should be treated this way and people do care about you, I care