Inability to fall asleep is due to worry/stress, irregular sleep cycles and noisy sleep environment. Exercise in the evening everyday for one hour. Take bath before sleeping. Read a book for 15-30mins before sleeping. Your sleeping environment should be quiet with no external disturbance. Keep away from gadgets, notifications and  FOMO. Avoid tea, coffee in the evenings. Have cold milk before sleeping. Don't sleep in the afternoon. Follow the same sleep schedule everyday. Try yoga (shavasana)

Don't worry! Take 1tab of Alprax (0.25mg) at bedtime on alternate days for 14days.. you will have a proper sleep :) take care.

Try doing cardio exercise daily.. avoid tea and coffee .. do meditation try relaxation exercises.. don’t sleep in the day time.. take 6-7 hrs of sleep .. habits take time..

Maybe due to stress. Try to meditate. It helps. Or else get a psychiatrist consultation. He/she will be able to guide you better