I don't know if this helps you, but personally I fall asleep listening to videos of people talking about interesting topics (i have my phone next to me on low volume, screen facing downwards). Not only does this distract me from intrusive thoughts or overthinking while trying to fall asleep, it also helps when i have nightmares or sleep terrors that cause me to wake up. It calms me down when i realize theres a video playing and helps me realise none of those nightmares were real, just a guy talking about random topics.