Then you appear to have made an error on your 2020 Form 8606 by it not showing some of your basis being applied to a Roth conversion. It seems that your 2020 Form 8606 should have had only $7,000 on line 14. If you have other funds in traditional IRAs, the basis applied you your Roth conversions would be less than the amount converted, but the numbers that you've mentioned suggest that you have no other funds in traditional IRAs.
