iPhones require .m4r files. Androids generally use .mp3 .

Verizon, AT&T, and T-Mobile often have their own "Tone" apps for monthly subscriptions or one-time purchases. 🛠️ Modern Alternatives (Free)

Open the iTunes Store app (not the Music app), tap "More," then "Tones."

Avoid "Free Ringtone" websites that look cluttered with pop-up ads; these are often sources of malware. If you'd like to move forward, tell me: Are you on iPhone or Android ?

The most popular app for Android and iOS. It offers a massive library of free, ad-supported sounds.

You can turn any song in your library into a ringtone for free directly on your iPhone.

I can give you a for your specific device.