A debit card uses your national currency, so you can't just send money from a debit card to a bitcoin address because bitcoin addresses hold bitcoin, not whatever your national currency is. Debit card and bitcoin address use different currencies.


You can send money from your card or bank to a crypto exchange, then exchange the money for bitcoin, and then send that bitcoin from your account on the exchange to a bitcoin address you've created for yourself. A bitcoin wallet is a piece of software that lets you send transactions. You'd be using the exchange's wallet to send bitcoin to you own address, but you wouldn't need to use a bitcoin wallet yourself until sometime in the future when you want to transfer that bitcoin out of your own address.