Just try to wake up early one day and don't take a nap in the afternoon. You'll automatically fell dizzy and sleepy at night.
start studing apne aap need ajayegi😂
Try listening to some music, use a sleeping mask, try sleeping without a pillow, workout at night so that you get tired, minimal usage of phone and healthy diet
Try to read a few pages before bed, music to relax your mind, take some professional help
Figure out what’s bothering you , try to stop thinking about unuseful stuff , make yourself tired by a lot of work , if nothing helps do consult a psychologist trust me that will be the best thing tha will ever happen to you . Whishing you a lot of peaceful and good sleep .