Vikrant,
Doing a SAP course is very easy (comparatively)! In this, you are a "customer" buying the training.
Unfortunately, doing a course is (almost) of zero value! Just doing a course does not give you the skills or capacity to add value to a company (as a SAP professional). As you can not add value, the company does not want to hire you.
The course is a starting point, with it you require experience of staying with the module (working with the module) for some years. Then you have the capacity to add value to a company and getting hired becomes more and more easy.
Staying with a module is key!
Keep practicing, participate in forums (answer questions etc.) keep giving interviews and one day you will get a fresher job in this demanding market.
Persevere...that is the key! Ofcourse with passion and deep interest.
Good luck,
TW