What’s with houses not being numbered anymore?

Apologies if there is already a discussion for this. But I cannot help notice how 90% of customers don’t have their number on their home!! Anywhere!! I have stopped trying to do orders at night because even if they do have numbers, they are so small/dirty they aren’t readable.

Even in the day time, I find myself struggling to find a number on a mailbox, above a garage, or even near the front door! It’s become a guessing game and hoping that my directions are correct. Does anyone have any advice on this?