Earlier quoted context omitted.
Credit scores make more sense if you think of them not as scores of your ability to pay back debt, but as scores of likely profitability for the creditor. Someone who never carries a balance and never will pay the occasional late fee is less profitable and thus has a lower score.
How to improve your credit score ... get credit cards and pay most of them off, but never close them. Once you have established credit you will then be offer 0 APR credit cards for 12 to 48 months. With a zero APR credit card that has a balance say of 10,000 your monthly minimum payment is 1% of that so $100. $20,000 $200 a month ... once the APR promo ends transfer it to another card with zero APR. Closing credits h…
My credit today is good, but not perfect. I have trouble getting any new credit card. All for the same stated reason - too much available unused credit.
I'm sure my score would dive if I closed a bunch, just pointing out that having a bunch isn't always a good thing.