To hide media in any folder showing up, you need to add .nomedia
file to it. If you search your device, using file explorer (either stock or your preferred),you are likely to find quite a few of these scattered around. Copy-paste one of these into the folder you want to hide (Hindi in your case) and the contents should not show up in your player
If you can't find .nomedia
file, you can easily create
If you want an app to do this and offer more functionalities, you could try nomedia app from play store. It offers you the flexibility of choosing folders to hide. App claims to do this (Works on 4.4.2 on Honor 6)
"A tiny tool to hide multimedia files and prevent media scanning. Touch and hold the directory to toggle. Media library will not display the files in red colored folders."
Alternatively, you could use MortPlayer Music, taken from Izzy's list, which takes the approach of choosing which folders you want to play and which folders you want to ignore. It over rides .nomedia
file presence and provides an easier alternative
Thanks to Izzy for completing the solution and suggesting alternatives