Have you been checked for Sleep Apnea?  Ask your doctor if this has been explored in your situation?

Have you considered getting checked out by a sleep specialist? The local hospital here has a sleep clinic. Maybe check if the health network in your area has a sleep clinic.  I don't know if you need to get a refer from your family doctor.  You may need to go thru your doctor.  I think a sleep test might help you determine why you are not getting a good sleep.  It might be better than guessing at why you are not sleeping well.