There are typically severals ways to turn Bitcoin into cash instantly, this are payment made easy on blockchain or crypto apps that enables users to transfer instant bitcoin to their various local accounts or dollars wallet.
1. Use a crypto debit card like the BitPay Card.
2. Sell crypto for cash on a central exchange like Coinbase or Kraken.
3. Use a P2P exchange.
4. Seek out a Bitcoin ATM.
5. Bonus: Gift cards.
Which either ways sometimes they could be a slits delay because of networks accessibility and severs but from reliable apps or blockchain it will definitely drop as verified transaction.
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P2P exchange is my way to cash bitcoin. No extra fees to give the exchange no extra tax on me from government.
All the others ways to cash bitcoin is like using a bank to cashout your bitcoin. Atm's works like normal ATM of bank, you will have to pay fees for every transaction. So I avoid them.