Currently on my first solo trip & some tips I can give you is to look confident lol. Get an eSIM if you’re looking to go out the country. That way you have signal & are able to move around. Share your location with friends & family just in case. If I’m booking a hotel or Airbnb, I usually just message or talk to them if I have any questions on where to go Most importantly, try to do research on the best centric areas to stay in, that way it’s easier for you to get around