There are multiple ways to converting bitcoins to INR. I have stopped/lost in crypto since RBI ban. but can give you some options to choose it from following.

1. P2P (Peer to Peer buy sell in India) You can buy or sell directly to interested person.

2. Buying Giftcards (You can purchase 2000+ giftcards from bitrefill using crypto)
    My ref if you want to use :- https://www.bitrefill.com/buy/?code=Tfqf1mLp

3. Earn cash by recharging other people mobile recharge using same bitrefill phone refill function.

4. Trade your crypto directly on active platform with better liquidity