Eating out is easy on keto once you know the pattern: protein and fat are everywhere, the carbs hide in the sides, sauces and the bread basket. Pick a cuisine for the specifics. More on the mindset in eating out on keto.
General guidance based on typical menus, not a guarantee: recipes vary and hidden sugar turns up in marinades, glazes, dressings and "crispy" coatings. When in doubt, ask how something is cooked and what is in the sauce. Restaurant portions and oils are also not always what you would use at home. This is not medical or dietary advice.