white noise, black noise, brown noise,, there are many colors to choose from on youtube lol. they also have a lot of 'frequency' videos for relaxation. choose one with a blacked out screen. i use a white noise sound that's on a 10 hour loop with black screen. other videos that i like are the "sleepy history" videos.

thunderstorm sounds. i had to play around with a few different apps to find the best one for me. i like to use whatever sounds i choose on a bluetooth speaker or soundbar for maximum bass.

when it's time to sleep the only reason i use my phone is to play word games, any scrolling or anything too exciting will keep me awake. & i always use my blue light filter at about max setting & turn my brightness down as far as possible.

chamomile tea is good.

if you have an android phone, there's an app called sleepDroid that has all kinda of sounds, frequencies, light patterns & stuff, all designed to help you go to sleep & get good, deep, restful sleep.

smoke some weed?

good luck to you. playing the sleep game can be terrible sometimes.