I'm pathetic

I've always been very akward in terms of socializing, but since I started highschool it became so much worse. I've managed to make a few friends but I have social anxiety and I keep embarrassing myself, blushing for the slightest thing, being distracted when people are talking to me, never say anything interesting. I always feel inferior, because everyone seems to make friends so easily and I just have so much difficulty to do such a natural thing for others. I cried alone in my room today, I've already asked my mom for a therapist but she says I don't need one. But I'm always unstable, I hate myself, I wish I could ignore these feelings.