NO there is no any problem and you can freely use crypto for international transfers. that's what everyone doing in crypto. so you can do it too. and as par as the India concern. I heard that it is made legal in india to use bitcoin but tax is very high.
Anywhere in the world, Bitcoin can be used for international transfers. However, in order to transfer using bitcoin, both the sender and the receiver must have a bitcoin wallet. In general, it has to do with the legality of bitcoin in your area, the bitcoin legality of the receiver you're sending it to, and the government's rules (taxes) on its use.
even places where crypto is illegal it is still being used for all type of activities.