Dear aspirant it is very stressful situation for you as a student.But,don't worry you should not loose hope as you are a bright student.So,now you can consider for spot round for the vacant seats left in Jadhavpur university.WBJEE will not going to have spot round this year.So you can now get only lower ranked seats of Jadhavpur University.Also, if you don't want that seat then you can go to any good private colleges of West Bengal and they will provide you with a scholarship as your rank is good.Otherwise you can drop one year and prepare for competition exam again.That's completely your choice.

Hope this helps.