You can even access Zedge from your browser if you do not wish to add an app.
Once s you choose a ringtone and download it then it will automatically go straight into your ringtone folder.
Current Phone > Samsung Z Fold³ 5G.
Simply, Go to File manager and select the song that you want to use as a ringtone and right click on it or tap on more option and click on set as ringtone and enjoy.
To download more music from YouTube or any other video platform go to ytbconverter.com