I feel tired everyday, despite having sufficient 7 hours sleep. I dont know how, has anyone faced this and any recommendations to overcome this? Tried coffee & no longer works :/

I think it is not the quantity of sleep in this case that’s the issue but the quality of sleep. You could try to monitor your sleep patterns for a start.

You might want to get a full body checkup too to rule out any underlying health issue.

Please seek professional medical advice as the doctor can best advised you based on your situation.

Just try to sneak in as much slp as u can, eg on the train to work, or waiting for food,people ,etc