To download a free ringtone, you can use an audio editor. An audio editor allows you to manipulate a file's audio and has a special option for making ringtones. A free 'ringtone' can be as simple as a song, or it can be as deep as you want it to be. Once you've made a corresponding ringtone, you can share it with your friends. https://tonosparacelular.net/tonos-para-whatsapp/
You can use a free audio editor to create a ringtone. It is possible to manipulate music files with a free audio editor. Then, you can convert the ringtone into a m4a file and store it on your phone. It will be very easy to transfer to other devices. But if you're not an expert at audio editing, you can always hire a professional to do it for you.
Another popular place to find free ringtones for mobile is MyTinyPhone.com. It has an incredible library of ringtones from various genres. You can sort the songs by popularity, category, and style. You can download a sexy ringtone or a romantic ditty. But remember that there are some legal issues involved with downloading a sexy mp3 to your phone.