Maybe I'm strange, but if I would have a friend I would recommend him to either listen to some nice radio with music and news, just favorite kind of music or nothing. Lately I'm partial to the sounds of a pebble beach or strange Buddhist rhythms. Also Lo-Fi music compilations seem soothing, lately I've found Alien Cake Music with Lo-Fi Grunge. I think that this Lo-Fi trend lately and in general the thing some people…
Would recommend https://mynoise.net/noiseMachines.php specifically, they have a bunch of great sounds.
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Mynoise (ive posted about it here in the past) is amazing.
If you have ADHD Insomnia (no drugs, just biology) and ASMR 'needs' -- Do church bells with thunder and the 1942 bomber static radio channel... EQ the bells up.
I had it saved years ago, but that mix will give you a lot to play with and be happy with.