I have been there a couple of times and I can say that it is a lively and wonderful city. From my own experience, I didn't notice any dangers when I've been there, so, I think San Francisco has a low overall risk. Of course, because of homeless people, it can make you feel unsafe and there are some parts of the city that are considered dangerous, but you can avoid traveling there. You will find more insights about it on https://www.travelsafe-abroad.com/un...san-francisco/. Anyway, that's a good idea to move to San Francisco.