Google has built something called Sleep Sounds into its Android software.
So if you’ve got a phone running Android 10 or later, you’ll be able to try it out.
There are several different sounds on offer, all designed to help you drift off.
First make sure you’re using Android 10 or later by going to the Settings app and then About Phone > Android Version.
If you need to update, go to Settings > System > System Update.
Once that’s done, setting up Sleep Sounds is very easy.