Until you deposit cash, you are allowed to withdraw cryptos.

It means, if you deposit cash to exchange, your crypto withdraw will be disabled; then you will have only cash withdraw option.

You need to use P2P, to buy crypto for cash from India. Here, you should not deposit cash to exchange but you need to transfer cash to seller's bank account, then cryptos will be credited to your account which are ready to withdraw to your personal address.

You may do these with binance, kucoin and paxful from India.

Being a buyer you do not need to pay 1% TDS but make sure about recent requirements/changes because these were all what I learned from wazirx. I have used kucoin P2P but stopped after their compliances with India law.

Paxful is not compliant with India (hence no TDS) but to open a buy order, I guess you need equivalent balance in your account. (Not sure how it will work for an all-new-beginner of crypto space).

I suggest not to use a regulated exchange to buy crypto from India to avoid future hassles. Better buy from your known friends. Or, use P2P platforms like Paxful (to use paxful you need to clear KYC with your phone number and documents). Or buy from this forum users through escrow.