Is there any problem if we use crypto for international transfers ?
Nope, there is no problem with this. You can use bitcoin for domestic or international payments. Just make sure the person you're sending bitcoin to. knows how to convert it to fiat.
I need some valuable comments ,, especially from indians
Here's the local board of Indian, you can ask there if you want.
https://bitcointalk.org/index.php?board=89.0