F2 Visa Rejected 3 times - Should try F2 again or Visiting Visa?

Tried F2 for my wife 2 times when I am studying Masters but got rejected with 214B.

At the moment I am on OPT and working for the past 4 months and reapplied for F2 again.

Still got rejected with a 214B form.

Wanted to know if applying a Visiting visa is better or Should try F2 again ?

Need suggestions Please