B2 Visa rejected. Purpose was cousins wedding

[Eleza.A]

I am 37yrs single women. My cousin requested me to come over for her wedding on 26th May. I really wished to attend the wedding and also spend a few days as vacation. Keeping that in mind I applied for a B2 visa. This is how it went.

VO: Can I have your passport
Me: I handed over my current passport
VO: what is the purpose of the visit
Me: Main purpose is My cousins wedding on 26th May which I wish to attend since my parents can?t travel plus I also wanted to club a 15 working days of break from office as site seeing trip.
VO: How long do u plan to stay
Me: 21 days exactly including weekend. Plan to be there by 24th May (She didn?t let me complete)
VO: What do you do?
Me: I work with XYZ co. as a software test lead for Oracle ERP application. I am a Oracle ERP functional specialist
VO: How much do u earn?
Me: 9.23L p.a (One thing here is in application I had mentioned p.m salary, the same as yearly just divided by per month)
VO: Have u been anywhere else outside India?
Me: I went to Qatar in 2016 for 10 days vacation
VO: Are u single n married
Me: Very much single by choice
VO: Sorry madam your visa is not approved this time And she handed me the white slip with 214b clause.

I wished to be there for the wedding. I answered everything very truthfully and confidently and if anything was asked further could have tried to substantiate my need for coming back.
I have two questions if anyone can help
1. What went wrong or what I could have done better
2. If I reapply what are my chances and how do I present my case further.

Would be great if anyone can throw some light on it?

[Libra_14]

1. What went wrong or what I could have done bette

You needed to prove strong ties to your home country & only you are the best one to know what could have went wrong.
You being single could be one reason.

2. If I reapply what are my chances and how do I present my case further.

If there is no change to answer of those questions, it won't help applying again.