DhirajRai
As you said you are 27, so you don’t leave with much time, I mean its always good to hear nothing is too late, you can start your career at 30 also. But, it’s not practical. If your morale is already down, how could you perform well? Try yourself 2–3 chances then look for other opportunities. There are huge opportunities outside government also.
As I already said, one should never try for such exams more than three times. It’s not about getting failed by 01 marks or 10, if you failed twice or thrice then, this simply is not for you. Accept and move on.