Help I can’t download apps from the App Store it always shows me the visa failed

The resolution to this issue is often making sure you have entered a credit card or other valid method of payment even if you don't plan on needing to use it.

If there is an option to select "Review" or "Continue" , select that and enter valid payment information if required. If there's problems doing this:

Tap: Settings > [your name at the top] > Media & Purchases > View Account > Review Apple ID.

More things to try in this 2018 post by Urquhart1244 marked Apple Recommended:

https://discussions.apple.com/thread/8434425?answerId=33542414022#33542414022

Payment methods that you can use with your Apple ID - https://support.apple.com/HT202631

when I install any app , they don’t install, they’re fix , solve the problem