Depression with chronic fatigue insomnia

Hi, I have a problem of depression sometimes severe. Its causing me lifestyle problems like cant go out n remaining in bed even if i am not feeling good staying at home. I feel low all the time and cant describe how i feel coz i relate to several things at once like vertigo, brain fog, Constipation, loss of focus, dry eyes, dry skin, bad posture, bloating, insomnia etc. I cant get rid of these as I constantly feel low and i feel all these mentioned problems at once its very hard for me to describe. So, all in all can say I am depressed as I remain impatient all day and cant enjoy the things i did earlier. For this, I have been prescribed as Dveniz 50mg although when i had started taken this it was helpful earlier but now when I am taking it its not showing its effect. Dose now is in the morning 1/2 doze. Is this correct doze as ive started again from today. I want to have a better sleep as well coz i had been awake for 1.5 day straight with no sleep. Is this 1/2 doze in the morning ok.