[Q] how can i find exactly where an android app store its data? topic

i have recently installed an app from play store named "hotstar" which is used to download episodes of tv shows. and downloaded few episodes too but they can only be watched using the app. i tried to find where it stores its data so i can transfer it to another devices but failed. can anyone tell me how can i find the exact location where it stores its data or any means so i can transfer those episodes to other devices.