Why when I try to download or update my apps it says there is a billing problem with a previous purchase

See -> If a message says 'billing problem with previous purchase' or 'verification required'

If a message says 'billing problem with previous purchase' or 'verification required' - Apple Support

• If these messages appear, you might be unable to make purchases, download free apps, or use subscriptions. To fix the issue, change your payment method. If you can't change your payment method, you can redeem a gift card and use the balance to pay for any unpaid orders.