I can recommend https://mynoise.net/ https://mynoise.net/ I gave them money like ages ago and I can still listen to all the soundscapes - really well done, you

I can recommend https://mynoise.net/ https://mynoise.net/ I gave them money like ages ago and I can still listen to all the soundscapes - really well done, you can adjust different channels of natural noise from professional recordings that the site owner did. There is also some free-listening noise on there.