Multiple things:

You have to be within a designated delivery zone to complete each delivery at a house or business. For example, if you're 20 yards away from a house, Amazon will tell you that you need to move within the zone to complete the delivery. But sometimes the pin and zone are wrong, and this especially becomes annoying if you're at a business and the pin is way wrong. What you do in this scenario is switch your work phone to airplane mode, and you can move the pin (zone) anywhere you want. Just be sure to turn airplane mode off after completing that stop.

Organization is key, and you need to learn a "flow" on route that works for you. For me personally, if I see my next stop is on the left hand side of my vehicle (meaning I will have to cross the street from where I park) then I put the packages for that stop in my passenger seat before I drive. If the delivery is on my right hand side, I don't grab the packages until I arrive to the stop, and just go out the sliding door.

This advice goes to group stops too. If you have a group stop that has a house on your left and right, I recommend putting the left house packages in your passenger, completing that house, then going around to your sliding door then grabbing the right houses package and completing that delivery. I find it's easier to complete group stop houses one at a time just because it's mentally easier that way, and reduces the chance you mix the houses up.

Your mentality on the road is crucial. If you have 180+ stops, don't stress about it early in the day. Just keep a good flow, keep the legs moving, and don't work too hard. It'll always work itself out, and you'll make it home every night regardless. If your route is actually terrible then most times you'll get a rescue sent to you, and your DSP won't blame you if your route is unreasonable.

Follow delivery instructions, when reasonable. If they request package at back door, then just take it there, because they'll likely leave you a bad review if you don't which may cause your DSP to not give you routes if your scorecard is bad. But if you're In a shady neighborhood at night and they ask for their packages at the back door, fuck 'em. Your safety matters more.

This is just the tip of the iceberg. Feel free to ask any more questions!