Why u can’t redownload my games after I deleted it and it’s keep requesting those things when I click download

Try this -> tap Continue.

Then Enter your Apple ID password, then follow the on-screen instructions.

See also:

If you can't make purchases or update apps, including free apps, you need to update your payment method or add a new one. 

Get live expert assistance by contacting Customer Support by phone or chat:

• Call Apple Support at 1-800-APLCARE. 📞
• International Support. 🌐
• Contact Apple Support. 📝
• Live chat using Messages. 💬