It seems to be a postcode lottery. I moved house recently. At the old place, whole thirteen years I was there, I experienced a catalogue of lost and/or damaged deliveries, both as a sender and as a receiver. Predominantly Hermes but Royal Mail was no better. Even the removal company have managed to lose a number of items.
Between replacing lost items and obtaining things the new place needed, I've had a fair few deliveries, many of them via Hermes. I do have to say that here, I receive emails at each stage, the penultimate one giving a delivery window and every single one of them has happened without issue. Probably cursed it now.