Diploma

You should definitely go with a degree course as doing Diploma doesn't land you with good job opportunities so you should preferably do a degree course and then do Diploma in animation and game designing.
Good luck.

Please mention which course you are interested in and also your qualifications and scores. You may visit this page for admission notifications regarding various courses at BIT-Mesra, Patna, Deoghar, Jaipur and Noida.
https://bitmesra.ac.in/Show_Admission_Page?cid=1&deptid=11&pid=27

You can check this link to get the best institute by checking their rank and other important details:
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/medicine-health-sciences/dietics-nutrition/colleges/diploma-courses-india&ved=2ahUKEwiyzpb2nITjAhXWR30KHb6DBDUQFjAAegQIBR

If you want to pursue courses related to Mathematics , you can visit this site :- MOOCS

https://www.shiksha.com/business-management-studies/course/pg-diploma-in-export-and-import-management-scdl-symbiosis-centre-for-distance-learning-model-colony-pune-125423
Follow the link to get information about Symbiosis Centre of Distance Learning for PG Diploma in export and import management.

*Admission process - Interested candidates can register and apply online or offline with the required information.
*Admission is based on the marks obtained in graduation.