https://www.youtube.com/@JJRicks has almost 200 videos of his Waymo rides at this point, and has probably captured everything one could hope to see them do.
It is probably an odd thing to find because in SF they really are everywhere. I don't live in SF but visit a few times a year and after the first time I saw one they just sort of became part of the cityscape and not worth filming.
In LA they're currently pretty active in the Santa Monica/Venice area (although rare enough that they get a lot of stares and photos... i felt like a celebrityon my rides). If you want to try it out there's some upcoming events where they'll give out a code for 1 week of free rides
In SF yes. Even small amounts of driving in certain areas will have multiple daily interactions with these vehicles.