You can easily switch the audio track from Hindi to the official Bangla dubbed version within the media player settings.
If you are searching for a "Mahabharat Bangla Google Drive" link, you are likely looking for one of these three definitive versions: Kashiram Das (Kashidasi Mahabharat) Mahabharat Bangla Google Drive
You can then read the Mahabharat in Bengali on your device using a compatible reader or app. You can easily switch the audio track from
Telegram is currently the largest hub for cloud storage links. Use the app's internal search bar to look for "Mahabharat Bangla HD" or "Bangla Book Library". highly revered by scholars.
A monumental prose translation from the original Sanskrit into Bengali, highly revered by scholars.