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You seem to be suffering from major depressive disorder. You need to take medication for your disorder and be active in your life. Try to do exercise daily like just go for walk for 30 to 45 minutes, take good food avoid junk food, take good sound sleep at least 6 to 8 hours, develop some creative hobbies like reading books, play some instrument, painting, writing, etc.
You need to start SSRI group of medication like Sertraline 50 mg daily in morning after breakfast and for sleep disturbance take tablet Clonazepam 0.5 mg daily before bed. Do an investigation to rule out thyroid disorder, TSH (thyroid stimulating hormone) and serum B12 level for vitamin B12 deficiency.
For more information consult a psychiatrist online --> https://www.icliniq.com/ask-a-doctor-online/psychiatrist