I dropped/lost something really valuable and my friend group is super mad

Guys what do I do

I was on a group trip with my friends. We had this epic plan for a fast in-and-out shopping trip. It was super important to my friend, who I'll call Ringleader, to keep the trip under a set time. He had it all planned out to a TEE, like with maps and diagrams and everything.

It was just the four of us, and we all had our own shopping lists. We were very well organized and knew where to go to get what we wanted. I wasn't just shopping for me personally, it was sort of like we were assisting someone else with their list, so my screw up doesn't just impact me.

Anyway long story short, on the way out, I DROPPED my item. I wanted to go back and grab it but Ringleader was so mad, and it was more important for us to be under his time limit than for me to retrieve the lost item.

Now everyone is mad at me :( I messed up so badly. I apologized to them but the three of them seem more scared that my screw up will really impact our whole group, not just me.

We are a team, and I let the team down ._.

What do I do?