I want to know how to enter credit cards there’s no place on my desktop or credit cards or even mentioned and I have a business credit card that I use. Am I to use another bank account? This program really sucks

Credit cards are set up in QuickBooks much like bank accounts.  You can create a new Credit Card type account from the chart of accounts. Then open it's register much like you would a bank register to view and enter transactions. Or, use the Credit Card form to do that, which is much like a check form for a bank account.  Access the credit card form from the Banking menu.