Visitor Visa - B2

Hi, I had recently applied B2 visa on 30 Oct 2019 but it was rejected here are my details and interview experience

39 yrs unmarried
Currently break from my previous job
I have couple of frnds in USA and i had mentioned one frnds details, my parents old at home.
No travel history

Purpose to visit was tourism n visit north east Usa coz my frnd is residing in north east for two weeks, my visit was only for tourism purpose.

Me : good morning ma'am
VO : good morningl
VO : what is ur purpose of visit to usa
Me : Tourism
VO : do u have frnds out there
Me : yes I have couple of my school frnds
VO : do u have any special frnd
Me : not anything as special
VO : what does ur frnd do
Me : he's working for company name I said
VO : what do u do
Me : I have taken break from my previous job, after I come from my vacation planning to go in mid Nov will srch job
VO : where u were working previously
Me : my previous job details I said
VO : as what
Me : told my post
VO : how much u earned
Me : said the amount

She typed n handed me the 214b form saying that this time ur visa is rejected u can try next time.

Now I'm planning to book a tour for April or may, so can u guys guide me if tours give 100% guarantee of getting visa. Kindly help.