Heater blend door drivers' side?

I was trying to see how to possibly reset the heater blend door as the driver side barely produces heat while the passenger side blows hot well. So, I just bought this vehicle, it wasn’t very well cared for I’ll say. I’m still blowing out dog hair months later. So, with that I said. I was blowing out the vents and using a soft brush that I snaked between vent slots brushing out dust and hair since that day is when the heat stopped blowing on the driver's side. Also, where is the blower motor and resistor I’m baffled it’s not on the passenger side like my old Escape.