My questions about the universe

Besides my hobbies and studies, I am also interested in space and the universe. What interests me the most is that there are still so many things we do not know about the universe. Below I will list some of the questions I think about:

1. Why is the universe expanding faster and faster?
2. How will the universe end?
3. How common are Earth-like planets with stable conditions for life?
4. Are we alone, or is life abundant across the cosmos?

See below for an interesting YouTube-video by NASA, about the James Webb Telescope: