• Find an exchange that trades with real actual crypto. e.g: Binance, Kraken, Coinbase Pro or similar
• Make the purchase, bank transfer can take a few days but is typically cheaper than card purchases which is instant.
• Transfer your coins to your local wallet

Additionally, if you're unfamiliar with local wallets do some practice first to learn the basics:

• Install the software, move some funds to it,
• Try send some funds to another wallet
• Try installing the wallet software on another device, see that your backup works
• Store your backup safely, in multiple places, not just inside your own house

Some wallet software:

• Exodus: beginner friendly but high fees
• Electrum: lightweight and simple, many features, adjustable fees
• Core: If you have plenty of storage space and a device that's often turned on, relatively user friendly after you've gotten used to it, many features, and the most secure choice.