Hello Rahul ,

UPSC Civil Services Exam Age Limit:

Candidate must be a minimum of 21 years of age and must not be more than 32 years of age. General Category & EWS: 32 years: 6 attempts

A general candidate can attempt the exam for 6 times, 9 attempts for OBC and unlimited attempts for SC/ST candidates.....

Now to justify the reason of your Gap is totally up to you because how you present yourself and And how dedicated you are to your work as a officer or collector.....

Hope this helps

All the very best for your Future