how did you learn to relax or sleep without alcohol?

i know that alcohol is a negative for sleep quality but i can't fall asleep without drinking. it's one of the main reasons i drank, as a sleep aid. it helped me relax and fall asleep. without it, i struggle. alcohol is bad for sleep quality but not being able to sleep in the first place is worse. i don't know what to replace it with and it's tough not to have anything, it's like waking up in the morning without being able to have a cup of coffee or tea.

did anyone else experience this and what was your remedy?