I did a lot of street photography, when I lived and worked in the downtown core of a major city. I still do whenever I can, making road trips to a nearby major city from my home in a minor one. I think it's the most difficult photographic genre to do well. On the one hand, a good street photographer is trying to document peoples' natural public lives - observing, but not interfering. On the other hand, it's rather invasive to single out a living subject in a photograph without their permission, even if the subject is in clear view in public.
Wildlife photographers don't need the animals' permission. Trees and mountains don't care about the people making landscapes. Buildings don't care about people capturing architecture. People sitting for a professional studio portrait sign model releases up front. Journalists generally only care about not getting in emergency services' way.
But us street folk? We're in that odd zone where we need our subjects to both give permission (either implicitly or explicitly) and act natural. Many can't manage that balance. They either start doing urban architecture with silhouetted people and pretend that it's street (which I am frequently guilty of), or they go full-scale Bruce-Asshole-Gilden and rampage their way into people's faces.