How much free space on your drive?
Currently 7.91 GB.
That's not even enough for macOS to tread water.
Do the math:
- Swap space for macOS: 10 ~ 15 GB
- Download: 8 GB
- Unpack: 17 GB
- Install: 17 GB
............ right around 50 gb needed, all at the same time.
You'll need -several- tens of GB free. Be sure to empty the trash when you start throwing stuff away.