You do not need a certified car when buying.
You will find thousands of 'used' cars in your area sold privately & probably a better buy then at a car shop. Said certification is just a word & really means nothing like the car is safe, sound, long lasting, etc.
Then all you do is get it licensed, insured, license plate, etc. I take it you have a car drivers license & if not you will need to apply for it & go through written & physical test.
You have been living in a city full of bureaucrates & their ways of thinking not to mention a maze of red tape of which most is sensless & a waste of tax payers dollars.
Remember all the others on the road are crazy & out to kill you.