Struggling with Low Energy Levels and Chronic Pain

So i been having no energy since a year ago nothing motivates me anymore i know im not depressed but my diagnosis is bipolar 1 with schizophrenia anxiety pain attacks depression and imsomnia i just feel really tired all the time that i just want to lay down on my bed and binge watch a show on Netflix i also have bulging disc on C 4, C5, and degenerative disc disease in my L1, L4, L5, T11, & T12. I have drank expresso shots red bull monster and nothing happens is like wtf u know is like y dont i have energy for nothing the only thing that i do all day is be on my bed binge watching netflix and i come downstairs to the living to smoke my joints because i cant smoke in my room my question is why do u guys think that i have no energy i also want to tell u that i gained 50 pounds in one year too