What Should I Do if I Lose My Passport While Traveling?

Apply at a U.S. embassy or consulate outside the United States. From the State Dept website dated 08/01/24.

"You will have to replace the passport before returning to the United States. Contact the nearest U.S. embassy or consulate for assistance. Contact information for U.S. embassies and consulates is also available in our country information pages. Ask to speak to the Consular Section to report your passport lost or stolen.

If a loved one tells you their U.S. passport was lost or stolen overseas, you can call the Office of Overseas Citizens Services at 1-888-407-4747. They will be able to help you put your loved one in touch with the closest U.S. embassy or consulate."

Go here to learn more: https://travel.state.gov/content/travel/en/international-travel/emergencies/lost-stolen-passport-abroad.html