Hello

YOu can try to get one of these to fulfill your dream of becoming a commercial pilot:

Scholarship by Saraswati Aviation Academy

Scholarship by Air India

Scholarship by Indian Airlines

Scholarship by Rajiv Gandhi Foundation

Scholarship by JRD Tata Memorial

Scholarship by Government Aviation Training Institute (GATI)

Scholarship to reserved category candidates SC or ST

If you want to go international you can attempt for:

Air Line Pilots Association Scholarship

OBAP Scholarships

GAPAN Scholarship for Pilot Training

To become a commercial pilot you need to  get Commercial Pilot License (CPL) from a DGCA-approved institution for which you have to clear a written test after whic you need to complete 200 hours of flying. For more details you can click on https://www.careers360.com/careers/airline-pilot