Dear aspirant !

Hope you ar doing great ! Mention your desired courses which you want to pursue in future means after class 12th, also a lot of best universities are there including the most famous DU ,it provide a great exposure to the students ,many btech universities are famous so you should mention the name to get the appropriate answer from our side ,also in some universities you marks of +2 doesn't matter ,they take their own entrance to get in .

So leave this thought that your marks will matter ,keep do hardwork ,you will get everything !

Hope it helps you !

Thanking you