I still struggle to get really good sleep. I've slept with ear plugs (nearly) every night for the last 30 years. Now there is almost zero chance I can get any

I still struggle to get really good sleep. I've slept with ear plugs (nearly) every night for the last 30 years. Now there is almost zero chance I can get any sleep without them, even in very quiet environments. Also just checked my CYP1A2 marker and have the A/A variant so I'm a "ultrarapid" caffeine metabolizer and I only drink 1 cup of caf-coffee in the mornings, so this is probably not a big contributor to low quality sleep. Maybe Alcohol (straight whiskey only), but maybe not. When I go through periods of not drinking I see no apparent improvement in my sleep. Still looking...