Social anxiety, depressed, isolated.

I am feeling depressed,negativity,suffering from social anxiety,mood swings,low on self confidence,low enery ,loe strength,unable to focus on anything even i find job of simple reading really difficult, i was very good at driving but know i feel scared of driving I feel sad or angry all the time From past 5 months as I completed my graduation i am suffering from it At many times in my life i had this same feeling spcl during exams I think that i might have genetic mental problem bcz my sister is under medication for depression and my mother is extremely angry and sad all the time I Have literally no friends to discuss about my life though  I was the topper at school and college but i feel left behind Everyone i know either know me as smart(bcz of my marks),anti social,egoistic,selfish