Safety should always be your first priority when travelling internationally. Before you depart, register with your country's embassy online so they can reach you in case of an emergency. Research the current travel advisories for your destination.
Keep digital and physical copies of your passport, visa, travel insurance, and emergency contacts. Never carry all your cash and cards in one place — distribute them across different pockets and bags.
Purchase comprehensive travel insurance before every trip. It should cover medical emergencies, trip cancellation, lost luggage, and theft. Read the policy carefully so you understand what is and is not covered.