Hello Anamika

Yeah you can crack the Group decision and personal interview as well the thing they will check your skills and also your knowledge in the GD is conducting because to know your stability in the group in that particular topic and they will observe your soft skills as well and mainly the personal interview is about how your different from others and they have throught in there mind that Why should I hire you so if you perform well with your englisE language skills and also other soft skills you will get in to it

The thing why they conducting these are to understand how is overall skills they didn't go for blindly about your marks 

I will provide the link for more information

https://www.google.com/amp/s/bschool.careers360.com/articles/gd-pi-wat-preparation-tips-from-toppers-and-experts/amp

Good luck