You can have a safe trip in Hong Kong if it's well planned. Try and make sure you have some local language tool at your disposal just in case. Otherwise it's a great place to explore, you can do tons of things!
If you have some extra time, travel to Macau as well!
Last year my friend did solo trip to Hong Kong,
and she had very good experience.
as per her experience, Honk Kong is pretty safe, and you will love the place. you can try capsule Hotel for stay as it will provide you a next level experience with comfy stay and pocket friendly too. have a language translator app in your mobile, you can find some language problem there but it will be manageable. and for you can ping me.