Links to live streams for various cities around the world. Why celebrate once when you can celebrate on the hour all day long!
Not all are pointing directly at the celebrations though, e.g. Cape Town’s cam is pointing towards the mountain, and not towards the Waterfront where the fireworks are going off. So for Cape Town maybe try this one at https://www.earthtv.com/en/webcam/cape-town-table-mountain/live-stream or this one further away especially for the fireworks at https://www.capetown-webcam.com.
See https://lifehacker.com/entertainment/livestream-new-years-eve-celebrations-around-the-world