How much do you take.. Which brand? Sometimes a lower dose can work instead of a really high dose (anything above 3 mg is dangerous and not recommended). Do you sleep during the day.
Look at your diet - Do you have stimulants like caffeine, sugar, sodas?
There are foods that can help sleep - like pumpkin seeds at night. 30g or 6 teaspoons makes me really drowsy, but it doesn't digest well so I had to give it up. Pumpkin seed powder in milk can work as both are sleep inducing. Foods rich in tryptophan can help sleep at night.
Go for a gut cleanse and get some probiotics - natural ones like kefir and yogurt are great. The gut microbiome is key to maintaining healthy neurotransmitter levels in the brain. Foods rich in fiber like Oats, fruits, veggies clean the gut. Making lifestyle changes with a focus on diet can bring a vast improvement in a matter of weeks or few months.
Some common sources of tryptophan are oats, eggs, bananas, dried prunes, milk, tuna fish, cheese, bread, chicken, turkey, peanuts, and chocolate
Other options :-
There's other stuff like having a hot bath or a slow walk for an hour after dinner.
Slow deep breathing yoga style meditation.
Get sunlight an hour a day. 30-60 mins after sunrise and 30-60 min before sunset are good times for getting vitamin D naturally which is known to promote sleep. This will take a few months to reflect though. Be patient and keep trying all of these to see if any of it works.
Put on some deeply technical boring video like on some medieval castle history or something before sleep..
These are all natural options, much better than benzos or other drugs.
Give all of them a go and see what works best.