Parents are always getting mad :( It's so hard to deal with!?

I'm 18 years old and I'm from an Indian family. I get yelled at by my parents about things that don't even make sense. I'm graduating from high school in a couple of days and I'm sure on that day of celebrations I'm going to get yelled and I'm going to cry, I don't even want to go to graduation because I'm afraid of that happening. I didn't try at all during my freshman and sophomore year of high school because of the peers that I was surrounded by. However, I pulled myself back up junior and senior year. Sadly my GPA wasn't that great and I couldn't get into the university I wanted to go to. Because of that my parents and sibling taunt me and say you're dumb and we don't know what you're going to do with your life. When they say that it really gets to me and I cry about it. What else am I suppose to do? Then they go off and start comparing me to my best friend who I know longer talk to. Shes going to the university I wanted to go to and I'm going to a community college. I've helped this girl throughout my whole life and never realized how cunning and manipulative she was. So I stopped talking to her. But the main point is my parents believe that all I know how to do is beautify myself and not think about education. I've done so good this year in school and I got straight A's but only one B lol. I will do my best in college and I know it. But I don't understand how to convince my parents that I will become something and make them proud. Being an Indian girl is so tough. I can't even get out of my house without lying. I never ask for anything and when I do they tell me I ask for so many things. I'm so tired of the insults and I can't even do anything about it, I just end up crying and I hate my life so much because of that.