With the camera thing, if its like youve got a reason not to have one (broke that day, whatever). Not suggesting it is always a no, just because of it. If youre a strong candidate, then you have a strong chance. But when picking someone to offer to, people who had their camera on are naturally going to stick out more.
Day to day working its not a requirement to always have your camera on but some occasions will require it.
virtual backgrounds are good enough to hide everything else. Personally I have a flat black vbackground.