The US is as far as I know the only country in the world who have a positive creditscore system. At least in Europe it's mostly based on a negative creditscore i.e. you are trusted by definition but if you don't pay your bills you end up not being allowed access to credit. In the US they don't trust you per definition and instead you have to prove that you are good with money by basically creating debt and then payin…
I felt pretty "trusted by definition." Citi gave me a credit card with a $3,000 limit as a college freshmen. A few years later I had an $8,000 limit card and a $10,000 limit card.
I bought my car certified-pre-owned under a program that writes favorable low-cost loans to recent college graduates with no or limited credit history (with an offer letter or paystubs).
You just aren't trusted with housing-sized amounts of money until you demonstrate responsibility with smaller dollar values first.
>basically creating debt and then paying it off
This depends on your definitions a little bit. You don't need to carry a balance and you certainly don't need to pay interest. You just need to create low but nonzero utilization on a credit card, pay it off every month, and not do anything else that might screw up your credit. I suppose you have debt in the interim between making the charge and paying it off, but most people don't consider it to be "credit card debt" if it goes away between statement cycles.