Dear you, You are going through a phase where lot of changes are occurring in your mindset. Example you will think about frds, the conversation you had with them, how they feel about you, your family, you will unintentionally find faults in you or world. And then the scrolling of social media. And the fear of missing out. And from your description it sounds like you have a active imagination and creative also. This combination faces difficulty in resting. Start training your body and mind to align. This will take time, efforts and persistence.  But you will be setting a foundation for your coming.life.

Sir , you might be having anxiety disorder . Pls consult to know the cause for sleep disturbance because most of the psychiatric illness will present as sleep disturbance. Also try sleep hygiene practices , this will help you to improve the quality of sleep