Back away girl! These people are doing nothing but drag you down, and that is NOT what friends are for. Friends love you and support you and care for you, no matter what happens. And if they put down others, something which you are clearly not okay with, they are not the kind of people you want to hang out with. If they are your only friends, it can be hard to let them go, but it is better for you and your future career that you are working so hard for. They may not even notice, and then you will see how much they really care for you. And believe me, you won't look stupid. You will come off as a strong woman that can make decisions for herself and that you don't need someone to cling onto. I hope this helps and that everything works out
Love you all!