Small backpack lost on 41 bus/after leaving 41 bus

I lost a small grey Quechua backpack on the 41 dublin bus on Saturday night/Sunday morning. It was a 4am service from town towards Swords Manor, and I got off the bus at Boroimhe in Swords. I've contacted dublin bus but they don't have it in their lost and found. If anyone has seen it / knows what may have happened to it, please let me know :) The contents includes an umbrella, a bobble hat and a tote bag the backpack looks like this: https://www.decathlon.ie/walking-backpacks/301684-58233-nh100-10-litres-backpack-black.html