The Best Mp3 Ringtones app is a great place to look for free music ringtones at https://toqueparacelular.com/baixar-toque-do-iphone/. You can browse the site for your favorite genres of music and download a free song for your phone. This site has a huge database of ringtones and other tones for the iPhone. It also provides some of the best ringtones for Android.
The WavePad Sound Editor Free edition is another free tool you may want to try out. This program will help you cut and join audio files to make a custom ringtone. You can also save the results in MP3 format. It is easy to use and will help you to create your own ringtone. It also shows a graph for the waveform of your chosen music file.