Lost black Anker PowerCore 10000 portable charger with USB-C cable

I lost my black Anker PowerCore 10000 portable charger yesterday around 3pm near the entrance of the Billings Public Library on 2nd Ave North. It's a slim, matte-black rectangle about the size of a small phone, with a tiny dent on the top-right corner and a blue sticker labeled A-12 on the back. The USB-C port shows a little wear, and there’s a faint scratch along the edge. I really need it back—it's the charger I rely on during long shifts, and it was a gift from my sister with sentimental value. If found, please message me here; I’d be incredibly grateful.