I have no credit how can I get a credit card if I never had credit?

You can most likely get a secured credit card to start.

See https://www.creditkarma.com/creditcards/explore/i/secured-credit-cards?

There is a article at the link below regarding how to build credit from scratch.

See https://www.creditkarma.com/advice/i/how-to-build-credit-from-scratch/

do you have an employment history?  that's good.  at one time each of us that now has credit cards had none.   apply for one that has the lowest fees/ interest rate.   and doesn't charge you any interest if paid off in full each month.    And do pay it off in full each month.    you may get a card with a low credit line, but most will increase it in time as you timely pay off the debt.    keep the outstanding balance at less  than 30% of the line.  

What goes into FICO® Scores?
FICO® Scores are calculated from the credit data in your credit report. This data is grouped into five categories; the chart below shows the relative importance of each category.
1.
35% - Payment history:
Whether you've paid past credit accounts on time
2.
30% - Amounts owed:
The amount of credit and loans you are using
3.
15% - Length of credit history:
How long you've had credit
4.
10% - New credit:
Frequency of credit inquires and new account openings
5.
10% - Credit mix:
The mix of your credit, retail accounts, installment loans, finance company accounts and mortgage loans

Well, if this were true, no one would have ever been given a credit card. Right?

The fact is credit card issuers want to give out credit cards, but they want to ensure a cardholder is a good credit risk. A good credit can be maintained by keeping your accounting very straight to the point. https://www.apps4rent.com/quickbooks-cloud-hosting/. There are budgeting tools which have proven to be effective.

Regards,

Adrian