It’s far from bricked, don’t worry. It’s an inconvenience, but your boot section broken for some unknown (or maybe know) reason. Just reflash it and call a day. Boot sectors can be rescued with right tools, maybe worth a try. Try to look for arch linux boot recovery or steam os boot recovery. A tutorial should pop off. This is very common issue in Linux world. Also, you can plug an USB c keyboard and check if the previous options work. But reinstall os is the quickest fix.