If you have a regular income a debit card is great. Because each time you choose to pay with a debit card the money comes straight out of your account. No charges usually and no bills or payments to wait for. With debit cards as long as you have the money to pay for what you buy in your account. Banks will generally allow you to have a debit card as long as you have a bank account that the debit card can be linked to.
A credit card is a little more complicated because with a credit card you must be able to pass a credit check. Also with credit cards you pay with your card and then must wait for a bill before you clear some or all of your balance. As long as you pay the balance in full by the payment due date you will not incur charges. But credit card charges may be high if you do not clear all your bill each month. Interest rates with credit cards can be high too.
Of the two in my opinion a debit card is much faster and easier to use and you do not have the administrative duties that come with a credit card.