A/C not blowing cold air on drivers side

This is more than likely the blend door actuator on the driver side. Here is a guide that will help with this replacement:

https://www.2carpros.com/articles/replace-blend-door-motor

Below you will find the process from the manual that will help with replacing this. I would also suggest checking the pressures just to be sure as a weak charge could cause this issue. However, it is more likely to be a blend door issue since you have dual zone temperature controls.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Please run through this material and let us know what questions you have. Thanks