The last-mile part of my business is becoming a nightmare honestly

I'm a bit frustrated today and just need to vent a little but also hoping someone might have some advice. I run a small operation out of Ajman where we deliver locally and honestly everything goes fine until it's time to actually get packages into customers' hands. That final stage is where everything seems to fall apart drivers can't find addresses, customers aren't home, packages get left in weird spots, and I feel like I spend half my day just playing phone tag trying to coordinate deliveries that should have been simple. I've been trying to discover better ways to manage final-mile logistics because clearly the system I've cobbled together isn't working anymore now that order volumes have picked up. I came across an article that talked about how smarter packaging can actually make the last-mile stage smoother because it makes packages easier to handle, stack, and organize in delivery vehicles, which means drivers spend less time rummaging around and more time actually delivering. I hadn't really thought about packaging affecting the delivery side that way but it makes sense when I think about it. I'm curious if anyone here has found that changes in packaging actually helped their delivery efficiency, or if I should be focusing my energy elsewhere like better route planning or delivery software. Feels like I need to fix something soon before I lose more customers to delivery headaches.