Web view download challenge

Hi good people i remember to have post one of this kind and got some ideas but still it didn’t yield to the expectation, trying to create a music downloading app but still facing a problem of how i can save the same name of the file, can someone help with block arrangements am ready to test and try all of them. Thanks so much
here are my simple blocks

The / is wrong, if the File should named Test.mp3.

If you using Android 11 you have to download it to the ASD.