You can download sleep sounds on your phones.
Plug your phones in next to your bed and listen to everything from rain on a tin roof to ocean sounds.
I listen to brown noise or pink noise. They seem to be a softer sound and no breaks in the sound like thunder or breaking waves. Can’t sleep without it.
Take on trips or when visiting family because you always have your phone with you. Just don’t forget the cord or your battery will run out!