I use Zedge
https://forums.androidcentral.com/e?...token=8Dax5XBH
Sound files downloaded through this app will show up in you sound file list with all the native sounds. For instance, if you download a new notification sound file through Zedge and then open your messaging app, select settings>notifications>notification sounds, you will be presented with two choices, media storage and Zedge. If you select media storage you will see the list of your native sounds and the newly downloaded sound file from Zedge will be in the list with your other sounds.